method

reject!

Ruby latest stable (v1_8_7_72) - 0 notes - Class: Hash

1_8_6_287 (0)
1_8_7_72 (0)
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reject!() public

Equivalent to Hash#delete_if, but returns nil if no changes were made.

/*
 *  call-seq:
 *     hsh.reject! {| key, value | block }  -> hsh or nil
 *
 *  Equivalent to <code>Hash#delete_if</code>, but returns
 *  <code>nil</code> if no changes were made.
 */

VALUE
rb_hash_reject_bang(hash)
    VALUE hash;
{
    int n;

    RETURN_ENUMERATOR(hash, 0, 0);
    n = RHASH(hash)->tbl->num_entries;
    rb_hash_delete_if(hash);
    if (n == RHASH(hash)->tbl->num_entries) return Qnil;
    return hash;
}

reject!

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