method

sort

Ruby latest stable (v2_5_5) - 1 note - Class: Hash

1_8_6_287 (0)
1_8_7_72 (-1)
1_8_7_330 (0)
1_9_1_378
1_9_2_180
1_9_3_125
1_9_3_392
2_1_10
2_2_9
2_4_6
2_5_5
2_6_3
What's this?

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v1_8_7_330) is shown here.

These similar methods exist in v2_5_5:

sort() public

Converts hsh to a nested array of [ key, value ] arrays and sorts it, using Array#sort.

h = { "a" => 20, "b" => 30, "c" => 10  }
h.sort                       #=> [["a", 20], ["b", 30], ["c", 10]]
h.sort {|a,b| a[1]<=>b[1]}   #=> [["c", 10], ["a", 20], ["b", 30]]

Show source

/*
 *  call-seq:
 *     hsh.sort                    => array
 *     hsh.sort {| a, b | block }  => array
 *
 *  Converts <i>hsh</i> to a nested array of <code>[</code> <i>key,
 *  value</i> <code>]</code> arrays and sorts it, using
 *  <code>Array#sort</code>.
 *
 *     h = { "a" => 20, "b" => 30, "c" => 10  }
 *     h.sort                       #=> [["a", 20], ["b", 30], ["c", 10]]
 *     h.sort {|a,b| a[1]<=>b[1]}   #=> [["c", 10], ["a", 20], ["b", 30]]
 *
 */

static VALUE
rb_hash_sort(hash)
    VALUE hash;
{
    VALUE entries = rb_hash_to_a(hash);
    rb_ary_sort_bang(entries);
    return entries;
}

March 31, 2009

3 thanks

Sorting Hashes with Symbol Keys

To sort a hash with symbol keys, use Enumerable#sort_by:

h = { :a => 20, :b => 30, :c => 10  }
h.sort                       # => NoMethodError: undefined method `<=>' for :a:Symbol
h.sort_by { |k,v| k.to_s }   # => [[:a, 20], [:b, 30], [:c, 10]]

sort

Related methods

Method deprecated or moved

Sorting Hashes with Symbol Keys