hashtable?(3scm) Scheme Programmer's Manual hashtable?(3scm)

hashtable? - check if an object is a hashtable 

(import (rnrs))                     ;R6RS
(import (rnrs hashtables))          ;R6RS


(hashtable? obj)

Returns #t if obj is a hashtable, #f otherwise.

Returns a single boolean object. 

(hashtable? (make-eq-hashtable))  =>  #t
(hashtable? '())                  =>  #f

This procedure can raise exceptions with the following condition types:
&assertion (R6RS)
The wrong number of arguments was passed or an argument was outside its domain.

make-hashtable(3scm)

R6RS, SRFI-126

This procedure is new in R6RS. The most common hashtable library in Scheme before R6RS was SRFI-69.

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2022-03-29