method

minmax_by

v1_8_7_330 - Show latest stable - 0 notes - Class: Enumerable

minmax_by() public

Returns two elements array array containing the objects in enum that gives the minimum and maximum values respectively from the given block.

a = %w(albatross dog horse)
a.minmax_by {|x| x.length }   #=> ["dog", "albatross"]

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/*
 *  call-seq:
 *     enum.minmax_by {| obj| block }   => [min, max]
 *
 *  Returns two elements array array containing the objects in
 *  <i>enum</i> that gives the minimum and maximum values respectively
 *  from the given block.
 *
 *     a = %w(albatross dog horse)
 *     a.minmax_by {|x| x.length }   #=> ["dog", "albatross"]
 */

static VALUE
enum_minmax_by(obj)
    VALUE obj;
{
    VALUE memo[4];

    RETURN_ENUMERATOR(obj, 0, 0);

    memo[0] = Qundef;
    memo[1] = Qundef;
    memo[2] = Qnil;
    memo[3] = Qnil;
    rb_block_call(obj, id_each, 0, 0, minmax_by_i, (VALUE)memo);
    return rb_assoc_new(memo[2], memo[3]);
}

minmax_by

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