.. index:: single: lcom_metric .. _lcom_metric/0:

.. rst-class:: right

object

lcom_metric

Lack of Cohesion Of Methods metric (LCOM4).

| Availability: | logtalk_load(code_metrics(loader))

| Author: Paulo Moura | Version: 1:0:0 | Date: 2026-03-30

| Compilation flags: | static, context_switching_calls

| Imports: | public :ref:`code_metrics_utilities <code_metrics_utilities/0>` | public :ref:`code_metric <code_metric/0>` | Provides: | :ref:`logtalk::message_tokens//2 <logtalk/0::message_tokens//2>` | Uses: | :ref:`list <list/0>` | :ref:`logtalk <logtalk/0>`

| Remarks:

• Score computation: Computes the number of connected components in the undirected graph whose nodes are the locally defined predicates and whose edges represent direct internal calls between them.
• Score interpretation: A score of 1 indicates a fully cohesive entity. Higher scores indicate that the entity may benefit from being split. Protocols are not scored as they cannot define predicates.
• Score representation: The score is represented by the compound term lcom(Components, Predicates) where Components is the number of connected components and Predicates is the total number of locally defined (non-auxiliary) predicates.

| Inherited public predicates: |  :ref:`code_metric/0::all/0`  :ref:`code_metric/0::all/1`  :ref:`code_metric/0::all_score/1`  :ref:`options_protocol/0::check_option/1`  :ref:`options_protocol/0::check_options/1`  :ref:`options_protocol/0::default_option/1`  :ref:`options_protocol/0::default_options/1`  :ref:`code_metric/0::directory/1`  :ref:`code_metric/0::directory/2`  :ref:`code_metric/0::directory_score/2`  :ref:`code_metric/0::entity/1`  :ref:`code_metric/0::entity_score/2`  :ref:`code_metric/0::file/1`  :ref:`code_metric/0::file/2`  :ref:`code_metric/0::file_score/2`  :ref:`code_metric/0::format_entity_score//2`  :ref:`code_metric/0::library/1`  :ref:`code_metric/0::library/2`  :ref:`code_metric/0::library_score/2`  :ref:`options_protocol/0::option/2`  :ref:`options_protocol/0::option/3`  :ref:`code_metric/0::rdirectory/1`  :ref:`code_metric/0::rdirectory/2`  :ref:`code_metric/0::rdirectory_score/2`  :ref:`code_metric/0::rlibrary/1`  :ref:`code_metric/0::rlibrary/2`  :ref:`code_metric/0::rlibrary_score/2`  :ref:`options_protocol/0::valid_option/1`  :ref:`options_protocol/0::valid_options/1`  

.. contents:: :local: :backlinks: top

Public predicates

(no local declarations; see entity ancestors if any)

Protected predicates

(no local declarations; see entity ancestors if any)

Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)