3.1.37 @nil

Represents nothing

The constant @nil is used to indicate not-filled or nothing. It is used very frequently in PCE.

When a new instance is created by PCE's virtual machine, all slots are initialised to @nil, after which object->initialise is invoked on the new instance. When an object is destroyed by PCE's virtual machine, all slots that are filled with true objects are reset to @nil. See object->unlink.

See also

@default