staticp Function

Summary

Specifies whether a given object has been allocated in static memory.

Package

system

Signature

staticp obj => bool

Arguments

Values

Description

The function staticp can be used to find out whether obj is allocated in static memory.

Foreign objects made by Lisp — for example in a Foreign Language Interface program — are made in static memory. The Lisp representations of these alien objects are not, however. Therefore staticp applied to an alien returns nil even though the alien instance itself is really allocated in static memory. To establish this, you can check the pointer to the alien instance within its Lisp representation (a structure).