Method: Enumerable#each_with_index

Defined in:
enum.c

#each_with_index(*args) {|obj, i| ... } ⇒ Enumerator #each_with_index(*args) ⇒ Object

Calls block with two arguments, the item and its index, for each item in enum. Given arguments are passed through to #each().

If no block is given, an enumerator is returned instead.

hash = Hash.new
%w(cat dog wombat).each_with_index { |item, index|
  hash[item] = index
}
hash   #=> {"cat"=>0, "dog"=>1, "wombat"=>2}

Overloads:



1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
 
# File 'enum.c', line 1725

static VALUE
enum_each_with_index(int argc, VALUE *argv, VALUE obj)
{
    NODE *memo;

    RETURN_SIZED_ENUMERATOR(obj, argc, argv, enum_size);

    memo = NEW_MEMO(0, 0, 0);
    rb_block_call(obj, id_each, argc, argv, each_with_index_i, (VALUE)memo);
    return obj;
}