method

key?

v1_8_7_72 - Show latest stable - 0 notes - Class: Hash

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key?(p1) public

Returns true if the given key is present in hsh.

   h = { "a" => 100, "b" => 200 }
   h.has_key?("a")   #=> true
   h.has_key?("z")   #=> false

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/*
 *  call-seq:
 *     hsh.has_key?(key)    => true or false
 *     hsh.include?(key)    => true or false
 *     hsh.key?(key)        => true or false
 *     hsh.member?(key)     => true or false
 *
 *  Returns <code>true</code> if the given key is present in <i>hsh</i>.
 *
 *     h = { "a" => 100, "b" => 200 }
 *     h.has_key?("a")   #=> true
 *     h.has_key?("z")   #=> false
 *
 */

static VALUE
rb_hash_has_key(hash, key)
    VALUE hash;
    VALUE key;
{
    if (st_lookup(RHASH(hash)->tbl, key, 0)) {
        return Qtrue;
    }
    return Qfalse;
}

key?

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