use stduse date const main = {	var buf : byte[1024] 	/* should be unix epoch */	match date.parsefmt("%Y-%m-%d %H:%M:%S %z", "1969-12-31 16:00:00 -0800")	| `std.Ok d:		std.assert(d.actual == 0, "got wrong date")		eq(std.bfmt(buf[:], "{D}", d), "1969-12-31 16:00:00 -0800")	| `std.Err m:		std.fatal("failed to parse date: {}\n", m)	;; 	match date.parsefmt("%Y-%m-%d", "1969 12 31")	| `std.Ok d:		std.fatal("should have errored")	| `std.Err m:		eq(std.bfmt(buf[:], "{}", m), "expected separator '-', found ' '")	;; 	/* parse into utc */	match date.parsefmtz("%Y-%m-%d %H:%M:%S %z", "1969-12-31 16:00:00 -0800", "")	| `std.Ok d:		std.assert(d.actual == 0, "got wrong date")		eq(std.bfmt(buf[:], "{D}", d), "1970-01-01 00:00:00 +0000")	| `std.Err m:		std.fatal("failed to parse date: {}\n", m)	;; 	/*Fri 29 Aug 2014 07:47:43 PM UTC*/	match date.parsefmt("%Y-%m-%d %z", "1932-10-23 +0500")	| `std.Ok d:		std.assert(d.actual ==  -1173675600 * 1_000_000, "wrong timestamp")		eq(std.bfmt(buf[:], "{D}", d), "1932-10-23 00:00:00 +0500")	| `std.Err m:		std.fatal("Failed to parse date: {}", m)	;; 	/*Names*/	match date.parsefmt("%a, %d %b %Y %H:%M:%S %z", "Thu, 21 Sep 2017 13:55:05 -0400")	| `std.Ok d:		std.assert(d.actual == 1506016505 * 1_000_000, "wrong timestamp")		eq(std.bfmt(buf[:], "{D}", d), "2017-09-21 13:55:05 -0400")	| `std.Err m:		std.fatal("Failed to parse date: {}", m)	;;} const eq = {actual, expected	if !std.eq(expected, actual)		std.fatal("expected date {}, got {}\n", expected, actual)	;;}