method

values_at

v1_8_6_287 - Show latest stable - Class: Hash

values_at(...)

public

Return an array containing the values associated with the given keys. Also see Hash.select.

  h = { "cat" => "feline", "dog" => "canine", "cow" => "bovine" }
  h.values_at("cow", "cat")  #=> ["bovine", "feline"]

/*
 * call-seq:
 *   hsh.values_at(key, ...)   => array
 *
 * Return an array containing the values associated with the given keys.
 * Also see <code>Hash.select</code>.
 *
 *   h = { "cat" => "feline", "dog" => "canine", "cow" => "bovine" }
 *   h.values_at("cow", "cat")  #=> ["bovine", "feline"]
*/

VALUE
rb_hash_values_at(argc, argv, hash)
    int argc;
    VALUE *argv;
    VALUE hash;
{
    VALUE result = rb_ary_new();
    long i;

    for (i=0; i<argc; i++) {
        rb_ary_push(result, rb_hash_aref(hash, argv[i]));
    }
    return result;
}

1Note

Passing in an Array instead of individual arguments

earless1 · Apr 2, 2013

Pass in array instead of list h = { "cat" => "feline", "dog" => "canine", "cow" => "bovine" }

keys_i_want = %w(cow cat)

h.values_at(*keys_i_want) #=> ["bovine", "feline"]

values_at

1Note

Passing in an Array instead of individual arguments

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