std-filep


Synopsis

(std-filep <expr>)

Description

Returns T if the argument is of type FILE, a file object returned by open, or NIL otherwise.

Example

(setq f (std-fopen (findfile "acad.rx") "r"))
(std-filep f)  => T
(std-fclose f)
(std-filep f)  => T
(std-filep 'f)  => nil
(std-filep nil)  => nil

Arguments

expr: any valid lisp expression

Return Value

T or nil

Side Effects

None

Module

(std-require 'STDLISP)

Defined in STDLISP.