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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