method

merge!

v1_8_6_287 - Show latest stable - 0 notes - Class: Hash

merge!(p1) public

Adds the contents of other_hash to hsh, overwriting entries with duplicate keys with those from other_hash.

   h1 = { "a" => 100, "b" => 200 }
   h2 = { "b" => 254, "c" => 300 }
   h1.merge!(h2)   #=> {"a"=>100, "b"=>254, "c"=>300}

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/*
 *  call-seq:
 *     hsh.merge!(other_hash)                                 => hsh
 *     hsh.update(other_hash)                                 => hsh
 *     hsh.merge!(other_hash){|key, oldval, newval| block}    => hsh
 *     hsh.update(other_hash){|key, oldval, newval| block}    => hsh
 *  
 *  Adds the contents of <i>other_hash</i> to <i>hsh</i>, overwriting
 *  entries with duplicate keys with those from <i>other_hash</i>.
 *     
 *     h1 = { "a" => 100, "b" => 200 }
 *     h2 = { "b" => 254, "c" => 300 }
 *     h1.merge!(h2)   #=> {"a"=>100, "b"=>254, "c"=>300}
 */

static VALUE
rb_hash_update(hash1, hash2)
    VALUE hash1, hash2;
{
    hash2 = to_hash(hash2);
    if (rb_block_given_p()) {
        rb_hash_foreach(hash2, rb_hash_update_block_i, hash1);
    }
    else {
        rb_hash_foreach(hash2, rb_hash_update_i, hash1);
    }
    return hash1;
}

merge!

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