remhash

remhash Function

Syntax:

remhash key hash-table → generalized-boolean

Arguments and Values:

key—an object.

hash-table—a hash table.

generalized-boolean—a generalized boolean.

Description:

Removes the entry for key in hash-table, if any. Returns true if there was such an entry, or false otherwise.

Examples:

(setq table (make-hash-table)) → #<HASH-TABLE EQL 0/120 32115666> 
(setf (gethash 100 table) "C") → "C" 
(gethash 100 table) → "C", *true* 
(remhash 100 table) → true 
(gethash 100 table) → NIL, *false* 
(remhash 100 table) → false 

Side Effects:

The hash-table is modified.

Hash

maphash

Expanded Reference: remhash

tip

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(remhash )