Method: Array#reverse

Defined in:
array.c

#reverse ⇒ Object

Returns a new array containing the elements of self in reverse order:

[0, 1, 2].reverse # => [2, 1, 0]

Related: see Methods for Combining.



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# File 'array.c', line 3159

static VALUE
rb_ary_reverse_m(VALUE ary)
{
    long len = RARRAY_LEN(ary);
    VALUE dup = rb_ary_new2(len);

    if (len > 0) {
        const VALUE *p1 = RARRAY_CONST_PTR(ary);
        VALUE *p2 = (VALUE *)RARRAY_CONST_PTR(dup) + len - 1;
        do *p2-- = *p1++; while (--len > 0);
    }
    ARY_SET_LEN(dup, RARRAY_LEN(ary));
    return dup;
}