dart:core

isBefore method

bool isBefore (

1. DateTime other

)

Returns true if this occurs before other.

The comparison is independent of whether the time is in UTC or in the local time zone.

var now = DateTime.now();
var earlier = now.subtract(const Duration(seconds: 5));
assert(earlier.isBefore(now));
assert(!now.isBefore(now));

// This relation stays the same, even when changing timezones.
assert(earlier.isBefore(now.toUtc()));
assert(earlier.toUtc().isBefore(now));

assert(!now.toUtc().isBefore(now));
assert(!now.isBefore(now.toUtc()));

Implementation

external bool isBefore(DateTime other);