method

each

v1_9_1_378 - Show latest stable - 0 notes - Class: Range

each() public

Iterates over the elements rng, passing each in turn to the block. You can only iterate if the start object of the range supports the succ method (which means that you can’t iterate over ranges of Float objects).

(10..15).each do |n|
   print n, ' '
end

produces:

10 11 12 13 14 15

Show source

static VALUE
range_each(VALUE range)
{
    VALUE beg, end;

    RETURN_ENUMERATOR(range, 0, 0);

    beg = RANGE_BEG(range);
    end = RANGE_END(range);

    if (!rb_respond_to(beg, id_succ)) {
        rb_raise(rb_eTypeError, "can't iterate from %s",
                 rb_obj_classname(beg));
    }
    if (FIXNUM_P(beg) && FIXNUM_P(end)) { /* fixnums are special */
        long lim = FIX2LONG(end);
        long i;

        if (!EXCL(range))
            lim += 1;
        for (i = FIX2LONG(beg); i < lim; i++) {
            rb_yield(LONG2FIX(i));
        }
    }
    else if (TYPE(beg) == T_STRING) {
        VALUE args[2];

        args[0] = end;
        args[1] = EXCL(range) ? Qtrue : Qfalse;
        rb_block_call(beg, rb_intern("upto"), 2, args, rb_yield, 0);
    }
    else {
        range_each_func(range, each_i, NULL);
    }
    return range;
}

each

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