Method: Enumerable#to_h

Defined in:
enum.c

#to_h(*args) ⇒ Hash #to_h(*args) { ... } ⇒ Hash

Returns the result of interpreting enum as a list of [key, value] pairs.

%i[hello world].each_with_index.to_h
  # => {:hello => 0, :world => 1}

If a block is given, the results of the block on each element of the enum will be used as pairs.

(1..5).to_h {|x| [x, x ** 2]}
  #=> {1=>1, 2=>4, 3=>9, 4=>16, 5=>25}

Overloads:

  • #to_h(*args) ⇒ Hash

    Returns:

  • #to_h(*args) { ... } ⇒ Hash

    Yields:

    Returns:



729
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731
732
733
734
 
# File 'enum.c', line 729

static VALUE
enum_to_h(int argc, VALUE *argv, VALUE obj)
{
    rb_block_call_func *iter = rb_block_given_p() ? enum_to_h_ii : enum_to_h_i;
    return enum_hashify(obj, argc, argv, iter);
}