symbol? - test if an object is a symbol

LIBRARY

(import (rnrs))                     ;R6RS
(import (rnrs base))                ;R6RS
(import (scheme r5rs))              ;R7RS
(import (scheme base))              ;R7RS

SYNOPSIS

(symbol? obj)

DESCRIPTION

Returns #t if obj is a symbol, otherwise returns #f.

RETURN VALUES

Returns a single boolean object as per the description.

EXAMPLES

(symbol? 'quux)         => #t
(symbol? (car '(a b)))  => #t
(symbol? "quux")        => #f
(symbol? 'nil)          => #t
(symbol? '())           => #f
(symbol? #f)            => #f

ERRORS

This procedure can raise exceptions with the following condition types:
&assertion (R6RS)
The wrong number of arguments was passed.
R7RS
The assertions described above are errors. Implementations may signal an error, extend the procedure's domain of definition to include such arguments, or fail catastrophically.

SEE ALSO

symbol->string(3scm)

STANDARDS

R4RS, IEEE Scheme, R5RS, R6RS, R7RS

AUTHORS

This page is part of the scheme-manpages project. It includes materials from the RnRS documents. More information can be found at https://github.com/schemedoc/manpages/.

Markup created by unroff 1.0sc,    March 04, 2023.