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Prolog files

aggregate.pl  -- Aggregation operators on backtrackable predicatesShow source
ansi_term.pl  -- Print decorated text to ANSI consolesShow source
apply.pl  -- Apply predicates on a listShow source
apply_macros.pl  -- Goal expansion rules to avoid meta-callingShow source
apply_macros_sentinel/0Used to detect that library(apply_macros) is loaded into the current context explicitly.Source
expand_phrase/2Provide goal-expansion for PhraseGoal.Source
expand_phrase/4Provide goal-expansion for PhraseGoal.Source
arithmetic.plShow source
arithmetic_expression_value/2True when Result unifies with the arithmetic result of evaluating Expression.Source
arithmetic_function/1Declare a predicate as an arithmetic function.Source
assoc.plShow source
assoc_to_keys/2True if Keys is the list of keys in Assoc.Source
assoc_to_list/2Translate Assoc to a list Pairs of Key-Value pairs.Source
assoc_to_values/2True if Values is the list of values in Assoc.Source
del_assoc/4True if Key-Value is in Assoc0.Source
del_max_assoc/4True if Key-Value is in Assoc0 and Key is the greatest key.Source
del_min_assoc/4True if Key-Value is in Assoc0 and Key is the smallest key.Source
empty_assoc/1Is true if Assoc is the empty association list.Source
gen_assoc/3True if Key-Value is an association in Assoc.Source
get_assoc/3True if Key-Value is an association in Assoc.Source
get_assoc/5True if Key-Val0 is in Assoc0 and Key-Val is in Assoc.Source
is_assoc/1True if Assoc is an association list.Source
list_to_assoc/2Create an association from a list Pairs of Key-Value pairs.Source
map_assoc/2True if Pred(Value) is true for all values in Assoc.Source
map_assoc/3Map corresponding values.Source
max_assoc/3True if Key-Value is in Assoc and Key is the largest key.Source
min_assoc/3True if Key-Value is in assoc and Key is the smallest key.Source
ord_list_to_assoc/2Assoc is created from an ordered list Pairs of Key-Value pairs.Source
put_assoc/4Assoc is Assoc0, except that Key is associated with Value.Source
atom.plShow source
identifier_parts/2Parts is a list of atoms that make up Identifier.Source
join_identifier_parts/3Join parts of an identifier according to Style.Source
restyle_identifier/3Restyle an identifier by extracting the alnum substrings and joining them together according to Style.Source
backcomp.pl  -- Backward compatibilityShow source
$apropos_match/2True if Needle is a sub atom of Haystack.Source
$arch/2Source
$argv/1Source
$declare_module/3Used in triple20 particle library.Source
$home/1Source
$module/2Source
$set_prompt/1Set the prompt for the toplevel.Source
$sig_atomic/1Execute Goal without processing signals.Source
$strip_module/3This used to be an internal predicate.Source
$version/1Source
C/3Used to be generated by DCG.Source
at_initialization/1Register goal only to be run if a saved state is restored.Source
call_cleanup/3Call Cleanup with an indication of the reason unified to Catcher.Source
checklist/2Source
concat/3Source
concat_atom/2Concatenate a list of atomic values to an atom.Source
concat_atom/3Concatenate a list of atomic values to an atom, inserting Separator between each consecutive elements.Source
convert_time/2Convert a time-stamp as obtained though get_time/1 into a textual representation using the C-library function ctime().Source
convert_time/8Convert a time stamp, provided by get_time/1, time_file/2, etc.Source
current_module/2True if Module is a module loaded from File.Source
current_mutex/3Source
current_thread/2Source
displayq/1Write term ignoring operators and quote atoms.Source
displayq/2Write term ignoring operators and quote atoms.Source
eval_license/0Source
export_list/2Module exports the predicates of List.Source
feature/2Control Prolog flags.Source
flush/0Source
free_variables/2Return a list of unbound variables in Term.Source
hash/1Demands PredInd to be indexed using a hash-table.Source
hash_term/2If Term is ground, Hash is unified to an integer representing a hash for Term.Source
index/1Prepare the predicate indicated by Head for multi-argument indexing.Source
lock_predicate/2Source
merge/3Merge the ordered sets List1 and List2 into a new ordered list.Source
merge_set/3Merge the ordered sets Set1 and Set2 into a new ordered set without duplicates.Source
message_queue_size/2True if Queue holds Size terms.Source
proper_list/1Old SWI-Prolog predicate to check for a list that really ends in a [].Source
read_clause/1Source
read_clause/2Source
read_history/6Source
read_pending_input/3Source
read_variables/2Source
read_variables/3Source
set_base_module/1Set the default module from which we inherit.Source
set_feature/2Control Prolog flags.Source
setup_and_call_cleanup/3Call Cleanup once after Goal is finished.Source
setup_and_call_cleanup/4Call Cleanup once after Goal is finished, with Catcher unified to the reason.Source
sformat/2Source
sformat/3Source
string_to_atom/2Bi-directional conversion between string and atom.Source
string_to_list/2Bi-directional conversion between a string and a list of character codes.Source
sublist/3Succeeds if List2 unifies with a list holding those terms for which call(Goal, Elem) succeeds.Source
substring/4Predecessor of sub_string using 1-based Offset.Source
sumlist/2True when Sum is the list of all numbers in List.Source
thread_at_exit/1Register Goal to be called when the calling thread exits.Source
trie_insert_new/3Source
unlock_predicate/2Source
write_ln/1Source
base32.pl  -- Base32 encoding and decodingShow source
base64.pl  -- Base64 encoding and decodingShow source
broadcast.pl  -- Event serviceShow source
charsio.pl  -- I/O on Lists of Character CodesShow source
atom_to_chars/2Convert Atom into a list of character codes.Source
atom_to_chars/3Convert Atom into a difference list of character codes.Source
format_to_chars/3Use format/2 to write to a list of character codes.Source
format_to_chars/4Use format/2 to write to a difference list of character codes.Source
number_to_chars/2Convert Atom into a list of character codes.Source
number_to_chars/3Convert Number into a difference list of character codes.Source
open_chars_stream/2Open Codes as an input stream.Source
read_from_chars/2Read Codes into Term.Source
read_term_from_chars/3Read Codes into Term.Source
with_output_to_chars/2Run Goal as with once/1.Source
with_output_to_chars/3Run Goal as with once/1.Source
with_output_to_chars/4Same as with_output_to_chars/3 using an explicit stream.Source
write_to_chars/2Write a term to a code list.Source
write_to_chars/3Write a term to a code list.Source
check.pl  -- Consistency checkingShow source
check/0Run all consistency checks defined by checker/2.Source
checker/2Register code validation routines.Source
list_autoload/0Report predicates that may be auto-loaded.Source
list_cross_module_calls/0List calls from one module to another using Module:Goal where the callee is not defined exported, public or multifile, i.e., where the callee should be considered private.Source
list_format_errors/0List argument errors for format/2,3.Source
list_format_errors/1List argument errors for format/2,3.Source
list_rationals/0List rational numbers that appear in clauses.Source
list_rationals/1List rational numbers that appear in clauses.Source
list_redefined/0Lists predicates that are defined in the global module user as well as in a normal module; that is, predicates for which the local definition overrules the global default definition.Source
list_strings/0List strings that appear in clauses.Source
list_strings/1List strings that appear in clauses.Source
list_trivial_fails/0List goals that trivially fail because there is no matching clause.Source
list_trivial_fails/1List goals that trivially fail because there is no matching clause.Source
list_undefined/0Report undefined predicates.Source
list_undefined/1Report undefined predicates.Source
list_void_declarations/0List predicates that have declared attributes, but no clauses.Source
string_predicate/1Multifile hook to disable list_strings/0 on the given predicate.Source
trivial_fail_goal/1Multifile hook that tells list_trivial_fails/0 to accept Goal as valid.Source
valid_string_goal/1Multifile hook that qualifies Goal as valid for list_strings/0.Source
check_installation.pl  -- Check installation issues and featuresShow source
check_config_files/0Examines the locations of config files.Source
check_installation/0Check features of the installed system.Source
check_installation/1As check_installation/0, but additionally returns a list of Component-Problem pairs.Source
test_installation/0Run regression tests in the installed system.Source
test_installation/1Run regression tests in the installed system.Source
update_config_files/0Move config files from their old location to the new if the file or directory exists in the old location but not in the new.Source
codesio.plShow source
format_to_codes/3Use format/2 to write to a list of character codes.Source
format_to_codes/4Use format/2 to write to a difference list of character codes.Source
open_codes_stream/2Open Codes as an input stream.Source
read_from_codes/2Read Codes into Term.Source
read_term_from_codes/3Read Codes into Term.Source
with_output_to_codes/2Run Goal with as once/1.Source
with_output_to_codes/3Run Goal with as once/1.Source
with_output_to_codes/4As with_output_to_codes/3, but Stream is unified with the temporary stream.Source
write_term_to_codes/3True when Codes is a string that matches the output of write_term/3 using Options.Source
write_term_to_codes/4True when Codes\Tail is a difference list containing the character codes that matches the output of write_term/3 using Options.Source
write_to_codes/2Codes is a list of character codes produced by write/1 on Term.Source
write_to_codes/3Codes is a difference-list of character codes produced by write/1 on Term.Source
coinduction.pl  -- Co-Logic ProgrammingShow source
coinductive/1The declaration :- coinductive name/arity, ... defines predicates as coinductive.Source
console_input.plShow source
csv.pl  -- Process CSV (Comma-Separated Values) dataShow source
csv/3Prolog DCG to `read/write' CSV data.Source
csv/4Prolog DCG to `read/write' CSV data.Source
csv_options/2Compiled is the compiled representation of the CSV processing options as they may be passed into csv//2, etc.Source
csv_read_file/2Read a CSV file into a list of rows.Source
csv_read_file/3Read a CSV file into a list of rows.Source
csv_read_file_row/3True when Row is a row in File.Source
csv_read_row/3Read the next CSV record from Stream and unify the result with Row.Source
csv_read_stream/3Read CSV data from Stream.Source
csv_write_file/2Write a list of Prolog terms to a CSV file.Source
csv_write_file/3Write a list of Prolog terms to a CSV file.Source
csv_write_stream/3Write the rows in Data to Stream.Source
ctypes.pl  -- Character code classificationShow source
is_digit/3Succeeds if `C' is a digit using `Base' as base and `Weight' represents its value.Source
is_paren/2True if Open is the open-parenthesis of Close.Source
to_lower/2Downcase a character code.Source
to_upper/2Upcase a character code.Source
upper_lower/2True when U is the character code of an uppercase character and L is the character code of the corresponding lowercase character.Source
date.pl  -- Process dates and timesShow source
date_time_value/3Extract values from a date-time structure.Source
day_of_the_week/2Computes the day of the week for a given date.Source
day_of_the_year/2Computes the day of the year for a given date.Source
parse_time/2Stamp is a timestamp created from parsing Text using the representation Format.Source
parse_time/3Stamp is a timestamp created from parsing Text using the representation Format.Source
debug.plShow source
assertion_failed/2This hook is called if the Goal of assertion/1 fails.
debug_print_hook/3Hook called by debug/3.Source
assertion/1Acts similar to C assert() macro.Source
debug/1Add/remove a topic from being printed.Source
debug/3Format a message if debug topic is enabled.Source
debug_message_context/1Specify additional context for debug messages.Source
debugging/1Examine debug topics.Source
debugging/2Examine debug topics.Source
list_debug_topics/0List currently known topics for debug/3 and their setting.Source
list_debug_topics/1List currently known topics for debug/3 and their setting.Source
nodebug/1Add/remove a topic from being printed.Source
dialect.pl  -- Support multiple Prolog dialectsShow source
dicts.pl  -- Dict utilitiesShow source
dict_fill/4Implementation for the dicts_to_same_keys/3 OnEmpty closure that fills new cells with a copy of ValueIn.Source
dict_keys/2True when Keys is an ordered set of the keys appearing in Dict.Source
dict_size/2True when KeyCount is the number of keys in Dict.Source
dicts_join/3Join dicts in Dicts that have the same value for Key, provided they do not have conflicting values on other keys.Source
dicts_join/4Join two lists of dicts (Dicts1 and Dicts2) on Key.Source
dicts_same_keys/2True if List is a list of dicts that all have the same keys and Keys is an ordered set of these keys.Source
dicts_same_tag/2True when List is a list of dicts that all have the tag Tag.Source
dicts_slice/3DictsOut is a list of Dicts only containing values for Keys.Source
dicts_to_compounds/4True when Dicts and Compounds are lists of the same length and each element of Compounds is a compound term whose arguments represent the values associated with the corresponding keys in Keys.Source
dicts_to_same_keys/3DictsOut is a copy of DictsIn, where each dict contains all keys appearing in all dicts of DictsIn.Source
mapdict/2True when all dicts have the same set of keys and call(Goal, Key, V1, ...) is true for all keys in the dicts.Source
mapdict/3True when all dicts have the same set of keys and call(Goal, Key, V1, ...) is true for all keys in the dicts.Source
mapdict/4True when all dicts have the same set of keys and call(Goal, Key, V1, ...) is true for all keys in the dicts.Source
dif.pl  -- The dif/2 constraintShow source
edinburgh.pl  -- Some traditional Edinburgh predicatesShow source
edit.pl  -- Editor interfaceShow source
edit/0Edit associated or script file.Source
edit/1Edit indicated object.Source
edit_command/2This predicate should specify the shell-command called to invoke the user's editor.Source
locate/2Locate object from the specified location.Source
locate/3Source
select_location/3Source
error.plShow source
current_encoding/1True if Name is the name of a supported encoding.Source
current_type/3True when Type is a currently defined type and Var satisfies Type of the body term Body succeeds.Source
domain_error/2The argument is of the proper type, but has a value that is outside the supported values.Source
existence_error/2Culprit is of the correct type and correct domain, but there is no existing (external) resource of type ObjectType that is represented by it.Source
existence_error/3Culprit is of the correct type and correct domain, but there is no existing (external) resource of type ObjectType that is represented by it in the provided set.Source
has_type/2True if Term satisfies Type.Source
instantiation_error/1An argument is under-instantiated.Source
is_of_type/2True if Term satisfies Type.Source
must_be/2True if Term satisfies the type constraints for Type.Source
permission_error/3It is not allowed to perform Operation on (whatever is represented by) Culprit that is of the given PermissionType (in fact, the ISO Standard is confusing and vague about these terms' meaning).Source
representation_error/1A representation error indicates a limitation of the implementation.Source
resource_error/1A goal cannot be completed due to lack of resources.Source
syntax_error/1A text has invalid syntax.Source
type_error/2Tell the user that Culprit is not of the expected ValidType.Source
uninstantiation_error/1An argument is over-instantiated.Source
exceptions.pl  -- Exception classificationShow source
catch/4As catch/3, only catching exceptions for which exception(ErrorType,Ball) is true.Source
error_term/2Describe the formal part of error(Formal,ImplDefined) exceptions.Source
exception/2If Ball is unbound, adds a delayed goal that tests the error belongs to Type when Ball is instantiated (by catch/3).Source
exception_term/2Describe exceptions that are not error(Formal, _) terms.Source
exception_type/2Declare all exceptions subsumed by Term to be an exception of Type.Source
explain.pl  -- Describe Prolog TermsShow source
fastrw.pl  -- Fast reading and writing of termsShow source
fast_read/1The next term is read from current standard input and is unified with Term.Source
fast_write/1Output Term in a way that fast_read/1 and fast_read/2 will be able to read it back.Source
fast_write_to_string/3Perform a fast-write to the difference-slist String\Tail.Source
files.plShow source
can_open_file/2Succeeds if the user has access to `File' in mode `Mode'.Source
chdir/1Change Working Directory.Source
gensym.pl  -- Generate unique symbolsShow source
git.plShow source
git/2Run a GIT command.Source
git_branches/2True when Branches is the list of branches in the repository.Source
git_default_branch/2True when BranchName is the current branch of a repository.Source
git_default_branch/2True when BranchName is the default branch of a repository.Source
git_describe/2Describe the running version based on GIT tags and hashes.Source
git_hash/2Return the hash of the indicated object.Source
git_ls_remote/3Execute git ls-remote against the remote repository to fetch references from the remote.Source
git_ls_tree/2True when Entries is a list of entries in the the GIT repository, Each entry is a term:.Source
git_open_file/4Open the file File in the given bare GIT repository on the given branch (treeisch).Source
git_process_output/3Run a git-command and process the output with OnOutput, which is called as call(OnOutput, Stream).Source
git_remote_branches/2Exploit git_ls_remote/3 to fetch the branches from a remote repository without downloading it.Source
git_remote_url/3URL is the remote (fetch) URL for the given Remote.Source
git_shortlog/3Fetch information like the GitWeb change overview.Source
git_show/4Fetch info from a GIT commit.Source
git_tags/2True when Tags is a list of git tags defined on the repository.Source
git_tags_on_branch/3Tags is a list of tags in Branch on the GIT repository Dir, most recent tag first.Source
is_git_directory/1True if Directory is a git directory (Either checked out or bare).Source
is_git_hash/1True when Atom represents a GIT hash, i.e., a 40 digit hexadecimal string.Source
hashtable.pl  -- Hash tablesShow source
heaps.pl  -- heaps/priority queuesShow source
add_to_heap/4Adds Key with priority Priority to Heap0, constructing a new heap in Heap.Source
delete_from_heap/4Deletes Key from Heap0, leaving its priority in Priority and the resulting data structure in Heap.Source
empty_heap/1True if Heap is an empty heap.Source
get_from_heap/4Retrieves the minimum-priority pair Priority-Key from Heap0.Source
heap_size/2Determines the number of elements in Heap.Source
heap_to_list/2Constructs a list List of Priority-Element terms, ordered by (ascending) priority.Source
is_heap/1Returns true if X is a heap.Source
list_to_heap/2If List is a list of Priority-Element terms, constructs a heap out of List.Source
merge_heaps/3Merge the two heaps Heap0 and Heap1 in Heap.Source
min_of_heap/3Unifies Key with the minimum-priority element of Heap and Priority with its priority value.Source
min_of_heap/5Gets the two minimum-priority elements from Heap.Source
singleton_heap/3True if Heap is a heap with the single element Priority-Key.Source
help.pl  -- Text based manualShow source
apropos/1Print objects from the manual whose name or summary match with Query.Source
help/0Show help for What.Source
help/1Show help for What.Source
show_html_hook/1Hook called to display the extracted HTML document.Source
hotfix.pl  -- Load hotfixes into executablesShow source
increval.pl  -- Incremental dynamic predicate modificationShow source
incr_directly_depends/2True if Goal1 depends on Goal2 in the IDG.Source
incr_invalid_subgoals/1List is a sorted list (set) of the incremental subgoals that are currently invalid.Source
incr_invalidate_call/1This is the XSB name, but the manual says incr_invalidate_calls/1 and the comment with the code suggests this is misnamed.Source
incr_invalidate_calls/1Invalidate all tables for subgoals of Goal as well as tables that are affected by these.Source
incr_is_invalid/1True when Subgoal's table is marked as invalid.Source
incr_propagate_calls/1Activate the monotonic answer propagation similarly to when a new fact is asserted for a monotonic dynamic predicate.Source
incr_table_update/0Updated all invalid tables.Source
incr_trans_depends/2True for each pair in the transitive closure of incr_directly_depends(G1, G2).Source
is_incremental_subgoal/1This predicate non-deterministically unifies Subgoal with incrementally tabled subgoals that are currently table entries.Source
intercept.pl  -- Intercept and signal interfaceShow source
intercept/3Run Goal as call/1.Source
intercept/4Similar to intercept/3, but the copy of Handler is called as call(Copy,Arg), which allows passing large context arguments or arguments subject to unification or destructive assignment.Source
intercept_all/4True when List contains all instances of Template that have been sent using send_signal/1 where the argument unifies with Ball.Source
nb_intercept_all/4As intercept_all/4, but backtracing inside Goal does not reset List.Source
send_signal/1If this predicate is called from a sub-goal of intercept/3, execute the associated Handler of the intercept/3 environment.Source
send_silent_signal/1As send_signal/1, but succeed silently if there is no matching intercept environment.Source
iostream.pl  -- Utilities to deal with streamsShow source
lazy_lists.pl  -- Lazy list handlingShow source
lazy_engine_next/4Lazy list iterator for engines.Source
lazy_findall/3True when List is a lazy list containing the instantiations for Template for each answer of Goal.Source
lazy_findall/4True when List is a lazy list containing the instantiations for Template for each answer of Goal.Source
lazy_get_codes/4Lazy list iterator to get character codes from a stream.Source
lazy_list/2Create a lazy list from a callback.Source
lazy_list/3Create a lazy list where the next element is defined by.Source
lazy_list_iterator/4Directive to create a lazy list iterator from a predicate that gets a single next value.Source
lazy_list_length/2True if Len is the length of the materialized lazy list.Source
lazy_list_materialize/1Materialize the lazy list.Source
lazy_message_queue/4Lazy list iterator for message queues.Source
lazy_read_lines/4Lazy list iterator to read lines from Stream.Source
lazy_read_terms/4Turn a stream into a lazy list of Prolog terms.Source
listing.pl  -- List programs and pretty print clausesShow source
listing/0Lists all predicates defined in the calling module.Source
listing/1List matching clauses.Source
listing/2List matching clauses.Source
portray_clause/1Portray `Clause' on the current output stream.Source
portray_clause/2Portray `Clause' on the current output stream.Source
portray_clause/3Portray `Clause' on the current output stream.Source
lists.pl  -- List ManipulationShow source
macros.pl  -- Macro expansionShow source
expand_macros/5Perform macro expansion on TermIn with layout PosIn to produce TermOut with layout PosOut.Source
include_macros/3Include macros from another module.Source
macro_position/1True when Position is the position of the macro.Source
main.pl  -- Provide entry point for scriptsShow source
make.plShow source
make/0Reload all source files that have been changed since they were loaded.Source
make_reload_file/1Reload file into the proper module.Source
modules.pl  -- Module utility predicatesShow source
nb_rbtrees.pl  -- Non-backtrackable operations on red black treesShow source
nb_rb_get_node/3True if Node is the node in RBTree associated to Key.Source
nb_rb_insert/3Add Key-Value to the tree RBTree using non-backtrackable destructive assignment.Source
nb_rb_node_value/2Value is the value associated to Node.Source
nb_rb_set_node_value/2Associate Value with Node.Source
nb_set.pl  -- Non-backtrackable setsShow source
obfuscate.pl  -- Code obfuscatingShow source
occurs.pl  -- Finding and counting sub-termsShow source
operators.pl  -- Manage operatorsShow source
option.plShow source
dict_options/2Convert between an option list and a dictionary.Source
merge_options/3Merge two option sets.Source
meta_options/3Perform meta-expansion on options that are module-sensitive.Source
option/2Get an Option from Options.Source
option/3Get an Option from Options.Source
select_option/3Get and remove Option from Options.Source
select_option/4Get and remove Option with default value.Source
optparse.pl  -- command line parsingShow source
opt_arguments/3Extract commandline options according to a specification.Source
opt_help/2True when Help is a help string synthesized from OptsSpec.Source
opt_parse/4Equivalent to opt_parse(OptsSpec, ApplArgs, Opts, PositionalArgs, []).Source
opt_parse/5Parse the arguments Args (as list of atoms) according to OptsSpec.Source
parse_type/3Hook to parse option text Codes to an object of type Type.Source
ordsets.pl  -- Ordered set manipulationShow source
oset.pl  -- Ordered set manipulationShow source
pairs.pl  -- Operations on key-value listsShow source
persistency.pl  -- Provide persistent dynamic predicatesShow source
pio.pl  -- Pure I/OShow source
portray_text.pl  -- Portray textShow source
pprint.pl  -- Pretty Print Prolog termsShow source
print_term/2Pretty print a Prolog term.Source
predicate_options.pl  -- Access and analyse predicate optionsShow source
prolog_autoload.pl  -- Autoload all dependenciesShow source
autoload_all/0Force all necessary autoloading to be done now.Source
autoload_all/1Force all necessary autoloading to be done now.Source
prolog_breakpoints.pl  -- Manage Prolog break-pointsShow source
breakpoint_property/2True when Property is a property of the breakpoint Id.Source
delete_breakpoint/1Delete breakpoint with given Id.Source
set_breakpoint/4Put a breakpoint at the indicated source-location.Source
set_breakpoint/5Put a breakpoint at the indicated source-location.Source
set_breakpoint_condition/2Set a condition for of the breakpoint with given Id.Source
prolog_clause.pl  -- Get detailed source-information about a clauseShow source
clause_info/4Fetches source information for the given clause.Source
clause_info/5Fetches source information for the given clause.Source
clause_name/2Provide a suitable description of the indicated clause.Source
initialization_layout/4Find term-layout of :- initialization directives.Source
make_varnames/5Create a Term varnames(...) where each argument contains the name of the variable at that offset.Source
open_source/2Hook into clause_info/5 that opens the stream holding the source for a specific clause.Source
predicate_name/2Describe a predicate as [Module:]Name/Arity.Source
unify_goal/5This hook is called to fix up source code manipulations that result from goal expansions.Source
unify_term/2Unify the two terms, where T2 is created by writing the term and reading it back in, but be aware that rounding problems may cause floating point numbers not to unify.Source
prolog_code.plShow source
body_term_calls/2True when BodyTerm calls Goal.Source
comma_list/2True if CommaList is a nested term over the ','/2 (';'/2) functor and List is a list expressing the elements of the conjunction.Source
extend_goal/3Extend the possibly qualified Goal0 with additional arguments from Extra.Source
head_name_arity/3Similar to functor/3, but deals with SWI-Prolog's zero-argument callable terms and avoids creating a non-callable term if Name is not an atom and Arity is zero.Source
is_control_goal/1True if Goal is a compiled Prolog control structure.Source
is_predicate_indicator/1True when Term is a predicate indicator.Source
mkconj/3Create a conjunction or disjunction from two terms.Source
mkdisj/3Create a conjunction or disjunction from two terms.Source
most_general_goal/2General is the most general version of Goal.Source
pi_head/2Translate between a PredicateIndicator and a Goal term.Source
predicate_label/2Create a human-readable label for the given predicate indicator.Source
predicate_sort_key/2Key is the (module-free) name of the predicate for sorting purposes.Source
semicolon_list/2True if CommaList is a nested term over the ','/2 (';'/2) functor and List is a list expressing the elements of the conjunction.Source
prolog_codewalk.pl  -- Prolog code walkerShow source
prolog_program_clause/2True when ClauseRef is a reference for clause in the program.Source
prolog_walk_code/1Walk over all loaded (user) Prolog code.Source
subterm_pos/5True when SubTerm is a sub term of Term, compared using Cmp, TermPosition describes the term layout of Term and SubTermPos describes the term layout of SubTerm.Source
prolog_colour.pl  -- Prolog syntax colouring support.Show source
prolog_config.pl  -- Provide configuration informationShow source
prolog_config/2Get information on the configuration of the current Prolog system.Source
prolog_dump_runtime_variables/0Dump the current configuration in shell format.Source
prolog_coverage.pl  -- Coverage analysis toolShow source
cov_load_data/2Reload coverage data from File.Source
cov_property/1True when coverage analysis satisfies Property.Source
cov_reset/0Discard all collected coverage data.Source
cov_save_data/2Save the coverage information to File.Source
coverage/1As call(Goal), collecting coverage information while Goal is running.Source
coverage/2Collect and optionally report coverage by Goal.Source
report_hook/2This hook is called after the data collection.Source
show_coverage/1Show collected coverage data.Source
prolog_debug.pl  -- User level debugging toolsShow source
debug_control_hook/1Allow user-hooks in the Prolog debugger interaction.Source
debugging/0Report current status of the debugger.Source
debugging_hook/1Multifile hook that is called as forall(debugging_hook(DebugMode), true) and that may be used to extend the information printed from other debugging libraries.Source
exception_hook/5Trap exceptions and consider whether or not to start the tracer.Source
nospy/1Set/clear spy-points.Source
nospyall/0Set/clear spy-points.Source
notrap/1Install a trap on error(Formal, Context) exceptions that unify.Source
spy/1Set/clear spy-points.Source
trap/1Install a trap on error(Formal, Context) exceptions that unify.Source
trap_alias/2Define short hands for commonly used exceptions.Source
prolog_deps.pl  -- Compute file dependenciesShow source
file_auto_import/2Update the autoload/2 directives for File.Source
file_autoload_directives/3Compute the dependencies as autoload/2 directives.Source
prolog_evaluable.pl  -- Inspect properties of evaluable functionsShow source
evaluable_property/2True when Property is a property of the evaluable function Function.Source
prolog_format.plShow source
format_spec/2Parse a format string.Source
format_spec/3DCG for parsing format strings.Source
format_types/2True when Format requires an argument list with terms of the type specified by Types.Source
prolog_history.pl  -- Per-directory persistent commandline historyShow source
prolog_jiti.pl  -- Just In Time Indexing (JITI) utilitiesShow source
jiti_list/0List the JITI (Just In Time Indexes) of selected predicates.Source
jiti_list/1List the JITI (Just In Time Indexes) of selected predicates.Source
jiti_suggest_modes/0Propose modes for the predicates referenced by Spec.Source
jiti_suggest_modes/1Propose modes for the predicates referenced by Spec.Source
prolog_locale.pl  -- Tweak the locale for Prolog developmentShow source
setup_prolog_integer_grouping/0This sets up the Prolog toplevel and debugger to write numbers with grouping.Source
prolog_metainference.pl  -- Infer meta-predicate propertiesShow source
prolog_pack.plShow source
pack_info/1Print more detailed information about Pack.Source
pack_install/1Install one or more packs from SpecOrList.Source
pack_install/2Install one or more packs from SpecOrList.Source
pack_install_local/3Install a number of packages in a local directory.Source
pack_list/1Query package server and installed packages and display results.Source
pack_list/2Query package server and installed packages and display results.Source
pack_list_installed/0List currently installed packages and report possible dependency issues.Source
pack_property/2True when Property is a property of an installed Pack.Source
pack_publish/2Publish a package.Source
pack_rebuild/0Rebuild possible foreign components of Pack.Source
pack_rebuild/1Rebuild possible foreign components of Pack.Source
pack_remove/1Remove the indicated package.Source
pack_remove/2Remove the indicated package.Source
pack_search/1Query package server and installed packages and display results.Source
pack_upgrade/1Upgrade Pack.Source
pack_url_file/2True if File is a unique id for the referenced pack and version.Source
prolog_profile.pl  -- Execution profilerShow source
profile/1Run once(Goal) under the execution profiler.Source
profile/2Run once(Goal) under the execution profiler.Source
profile_data/1Gather all relevant data from profiler.Source
profile_procedure_data/2Collect data for Pred.Source
show_profile/1Display last collected profiling data.Source
prolog_qlfmake.pl  -- Compile the library to QLF formatShow source
qlf_make/0Compile all files from the system libraries to .QLF format.Source
qlf_make/1Ensure a .QLF version of Spec.Source
prolog_source.pl  -- Examine Prolog source-filesShow source
prolog_stack.pl  -- Examine the Prolog stackShow source
prolog_trace.pl  -- Print access to predicatesShow source
list_tracing/0List predicates we are currently tracing.Source
notraceall/0Remove all trace points.Source
trace/1Print passes through ports of specified predicates.Source
trace/2Print passes through ports of specified predicates.Source
tracing/2True if Spec is traced using Ports.Source
prolog_versions.pl  -- Demand specific (Prolog) versionsShow source
prolog_wrap.pl  -- Wrapping predicatesShow source
prolog_xref.pl  -- Prolog cross-referencer data collectionShow source
pure_input.plShow source
lazy_list_character_count/3True when CharCount is the current character count in the Lazy list.Source
lazy_list_location/3Determine current (error) location in a lazy list.Source
phrase_from_file/2Process the content of File using the DCG rule Grammar.Source
phrase_from_file/3As phrase_from_file/2, providing additional Options.Source
phrase_from_stream/2Run Grammer against the character codes on Stream.Source
stream_to_lazy_list/2Create a lazy list representing the character codes in Stream.Source
syntax_error/3Throw the syntax error Error at the current location of the input.Source
qpforeign.pl  -- Quintus compatible foreign loaderShow source
load_foreign_files/0Calls make_foreign_wrapper_file(+File), compiles the wrapper and loads the predicates.Source
load_foreign_files/2Calls make_foreign_wrapper_file(+File), compiles the wrapper and loads the predicates.Source
load_foreign_files/3Calls make_foreign_wrapper_file(+File), compiles the wrapper and loads the predicates.Source
load_foreign_resource/2Load a foreign module.Source
make_foreign_resource_wrapper/3Create a wrapper-file for the given foreign resource.Source
make_foreign_wrapper_file/1Just output the wrapper file to the named .c file.Source
make_foreign_wrapper_file/2Just output the wrapper file to the named .c file.Source
make_shared_object/3Generate a wrapper and link it using plld to the given SharedObject.Source
qsave.pl  -- Save current program as a state or executableShow source
arch_shlib/3This is a user defined hook called by qsave_program/2.Source
qsave_program/1Make a saved state in file `File'.Source
qsave_program/2Make a saved state in file `File'.Source
qsave_toplevel/0Called to handle `-c file` compilaton.Source
quasi_quotations.pl  -- Define Quasi Quotation syntaxShow source
quintus.pl  -- Quintus compatibilityShow source
random.pl  -- Random numbersShow source
rbtrees.pl  -- Red black treesShow source
readln.pl  -- Read line as list of tokensShow source
readutil.pl  -- Read utilitiesShow source
record.pl  -- Access compound arguments by nameShow source
rwlocks.pl  -- Read/write locksShow source
with_rwlock/3Run Goal, synchronized with LockId in ModeSpec.Source
with_rwlock/4Run Goal, synchronized with LockId in ModeSpec.Source
sandbox.plShow source
settings.pl  -- Setting managementShow source
shell.pl  -- Elementary shell commandsShow source
shlib.pl  -- Utility library for loading foreign objects (DLLs, shared objects)Show source
solution_sequences.pl  -- Modify solution sequencesShow source
sort.plShow source
statistics.pl  -- Get information about resource usageShow source
call_time/2Call Goal as call/1, unifying Time with a dict that provides information on the resource usage.Source
call_time/3Call Goal as call/1, unifying Time with a dict that provides information on the resource usage.Source
statistics/0Print information about resource usage using print_message/2.Source
statistics/1Stats is a dict representing the same information as statistics/0.Source
thread_statistics/2Obtain statistical information about a single thread.Source
time/1Execute Goal, reporting statistics to the user.Source
streams.pl  -- Manage Prolog streamsShow source
with_output_to/3Run Goal and once/1 while capturing all output to all streams (current_output, user_output and user_error) in the string Output.Source
strings.pl  -- String utilitiesShow source
dedent_lines/3Remove shared indentation for all lines in a string.Source
indent_lines/3Add Prefix to the beginning of lines in In.Source
indent_lines/4Similar to indent_lines/3, but only adds Prefix to lines for which call(Filter, Line) succeeds.Source
interpolate_string/4Establish a string from a template by replacing patterns.Source
string/4Implements the quasi quotation syntax string.Source
string_lines/2True when String represents Lines.Source
system.pl  -- System utilitiesShow source
lock_predicate/1Transform a predicate into a system predicate.Source
system_mode/1Switch the system into system or user mode.Source
system_module/0Any predicate defined after this declaraction uptil the end of the file will become a system predicate.Source
unlock_predicate/1Transform a system predicate into a normal system predicate.Source
tables.pl  -- XSB interface to tablesShow source
terms.pl  -- Term manipulationShow source
thread.pl  -- High level thread primitivesShow source
thread_pool.pl  -- Resource bounded thread managementShow source
threadutil.pl  -- Interactive thread utilitiesShow source
attach_console/0Create a new console and make the standard Prolog streams point to it.Source
attach_console/1Create a new console and make the standard Prolog streams point to it.Source
interactor/0Run a Prolog toplevel in another thread with a new console window.Source
interactor/1Run a Prolog toplevel in another thread with a new console window.Source
join_threads/0Join all terminated threads.Source
tbacktrace/1Print a backtrace for Thread to the stream user_error of the calling thread.Source
tbacktrace/2Print a backtrace for Thread to the stream user_error of the calling thread.Source
tdebug/0Enable debug-mode, trapping the graphical debugger on reaching spy-points or errors.Source
tdebug/1Enable debug-mode, trapping the graphical debugger on reaching spy-points or errors.Source
thread_has_console/0True when the calling thread has an attached console.Source
thread_run_interactor/0Attach a console and run a Prolog toplevel in the current thread.Source
threads/0List currently known threads with their status.Source
tnodebug/0Disable debug-mode in all threads or the specified Thread.Source
tnodebug/1Disable debug-mode in all threads or the specified Thread.Source
tprofile/1Profile the operation of Thread until the user hits a key.Source
tspy/1Trap the graphical debugger on reaching Spec in the specified or any thread.Source
tspy/2Trap the graphical debugger on reaching Spec in the specified or any thread.Source
with_stopped_threads/2Stop all threads except the caller while running once(Goal).Source
xterm_args/1Multifile and dynamic hook that provides (additional) arguments for the xterm(1) process opened for additional thread consoles.Source
tty.pl  -- Terminal operationsShow source
menu/3Show a menu.Source
tty_clear/0Clear the display.Source
tty_flash/0Give visual signal if possible, otherwise beep.Source
ugraphs.pl  -- Graph manipulation libraryShow source
url.pl  -- Analysing and constructing URLShow source
utf8.plShow source
utf8_codes/3DCG translating between a Unicode code-list and its UTF-8 encoded byte-string.Source
varnumbers.pl  -- Utilities for numbered termsShow source
vm.pl  -- SWI-Prolog Virtual Machine utilitiesShow source
clause_vm/2True when VM is the virtual machine code of ClauseRef.Source
vm_list/1Lists the definition of the predicates matching Spec to current_output.Source
vmi_labels/2Translated between a raw and a labeled representation for a VMI sequence as produced by clause_vm/2.Source
wfs.pl  -- Well Founded Semantics interfaceShow source
answer_residual/2True when Goal resolves to a tabled predicate and Residual is the residual goal associated with an answer for Goal.Source
call_delays/2True when Goal is true with Delays.Source
call_residual_program/2Call Goal and return the full residual program as a list of Clauses.Source
delays_residual_program/2Given a delay as returned by call_delays/2, produce a set of clauses the represents the complete residual program responsible for these delays, The program contains at least one loop through tnot/1 and is either inconsistent or has multiple models according to the stable model semantics.Source
when.pl  -- Conditional coroutiningShow source
when/2Execute Goal when Condition is satisfied.Source
win_menu.pl  -- Console window menuShow source
writef.pl  -- Old-style formatted writeShow source
swritef/2Use writef/1 or writef/2 and write the result to a string.Source
swritef/3Use writef/1 or writef/2 and write the result to a string.Source
writef/1Formatted write to the current_output.Source
writef/2Formatted write to the current_output.Source
www_browser.pl  -- Open a URL in the users browserShow source
yall.plShow source
//2Shorthand for Free/[]>>Lambda.Source
//3Shorthand for Free/[]>>Lambda.Source
//4Shorthand for Free/[]>>Lambda.Source
//5Shorthand for Free/[]>>Lambda.Source
//6Shorthand for Free/[]>>Lambda.Source
//7Shorthand for Free/[]>>Lambda.Source
//8Shorthand for Free/[]>>Lambda.Source
//9Shorthand for Free/[]>>Lambda.Source
>>/2Calls a copy of Lambda.Source
>>/3Calls a copy of Lambda.Source
>>/4Calls a copy of Lambda.Source
>>/5Calls a copy of Lambda.Source
>>/6Calls a copy of Lambda.Source
>>/7Calls a copy of Lambda.Source
>>/8Calls a copy of Lambda.Source
>>/9Calls a copy of Lambda.Source
is_lambda/1True if Term is a valid Lambda expression.Source
lambda_calls/2Goal is the goal called if call/N is applied to LambdaExpression, where ExtraArgs are the additional arguments to call/N.Source
lambda_calls/3Goal is the goal called if call/N is applied to LambdaExpression, where ExtraArgs are the additional arguments to call/N.Source
zip.plShow source
with_zipper/2Run Goal while holding ownership over Zipper.Source
zip_close/1Close a zipper.Source
zip_close/2Close a zipper.Source
zip_open/4Create a Zipper, providing access to File.Source
zipper_file_info/3Obtain information about the current zip entry.Source
zipper_goto/2Seek Zipper to a specified entry.
zipper_members/2True when Members is the list of file names in the Zipper.Source
zipper_open_current/3Open the current entry as an input stream.