Method: Time#-

Defined in:

time.c

#-(other_time) ⇒ Float #-(numeric) ⇒ Time

Difference — Returns a new Time object that represents the difference between time and other_time, or subtracts the given number of seconds in numeric from time.

t = Time.now       #=> 2007-11-19 08:23:10 -0600
t2 = t + 2592000   #=> 2007-12-19 08:23:10 -0600
t2 - t             #=> 2592000.0
t2 - 2592000       #=> 2007-11-19 08:23:10 -0600

# File 'time.c', line 3729

static VALUE
time_minus(VALUE time1, VALUE time2)
{
    struct time_object *tobj;

    GetTimeval(time1, tobj);
    if (IsTimeval(time2)) {
	struct time_object *tobj2;

	GetTimeval(time2, tobj2);
        return rb_Float(rb_time_unmagnify_to_float(wsub(tobj->timew, tobj2->timew)));
    }
    return time_add(tobj, time2, -1);
}