method

each

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

each() public

Calls block once for each key in hsh, passing the key and value to the block as a two-element array. Because of the assignment semantics of block parameters, these elements will be split out if the block has two formal parameters. Also see Hash.each_pair, which will be marginally more efficient for blocks with two parameters.

h = { "a" => 100, "b" => 200 }
h.each {|key, value| puts "#{key} is #{value}" }

produces:

a is 100
b is 200

Show source

/*
 *  call-seq:
 *     hsh.each {| key, value | block } -> hsh
 *
 *  Calls <i>block</i> once for each key in <i>hsh</i>, passing the key
 *  and value to the block as a two-element array. Because of the assignment
 *  semantics of block parameters, these elements will be split out if the
 *  block has two formal parameters. Also see <code>Hash.each_pair</code>, which
 *  will be marginally more efficient for blocks with two parameters.
 *
 *     h = { "a" => 100, "b" => 200 }
 *     h.each {|key, value| puts "#{key} is #{value}" }
 *
 *  <em>produces:</em>
 *
 *     a is 100
 *     b is 200
 *
 */

static VALUE
rb_hash_each(hash)
    VALUE hash;
{
    RETURN_ENUMERATOR(hash, 0, 0);
    rb_hash_foreach(hash, each_i, 0);
    return hash;
}

each

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