remhash (ANSI and GNU Common Lisp Document)

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#### 18.2.10 remhash [Function]

`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.