Method: Enumerable#partition

Defined in:
enum.c

#partition {|obj| ... } ⇒ Array #partition ⇒ Object

Returns two arrays, the first containing the elements of enum for which the block evaluates to true, the second containing the rest.

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

(1..6).partition { |v| v.even? }  #=> [[2, 4, 6], [1, 3, 5]]

Overloads:

  • #partition {|obj| ... } ⇒ Array

    Yields:

    • (obj)

    Returns:



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# File 'enum.c', line 702

static VALUE
enum_partition(VALUE obj)
{
    NODE *memo;

    RETURN_SIZED_ENUMERATOR(obj, 0, 0, enum_size);

    memo = NEW_MEMO(rb_ary_new(), rb_ary_new(), 0);
    rb_block_call(obj, id_each, 0, 0, partition_i, (VALUE)memo);

    return rb_assoc_new(memo->u1.value, memo->u2.value);
}