Datetime format?

[Jonathan M Davis]

On Thursday, January 18, 2024 4:26:42 PM MST zoujiaqing via Digitalmars-d-
learn wrote:
> ```D
> import std.datetime : Clock, format;
> import std.stdio : writeln;
>
> void main()
> {
>      auto currentTime = Clock.currTime;
>
>      auto formattedTime = currentTime.format("%Y-%m-%d %H:%M:%S");
>
>      writeln("Formatted Time: ", formattedTime);
> }
> ```

std.datetime does not currently support custom date/time formats. It only
supports the ISO format, the ISO Extended format, and Boost's simple time
format.

// e.g. 20240118T163806.5813052
auto iso = time.toISOString();

// e.g. 2024-01-18T16:38:06.5813052
auto isoExt = time.toISOExtString();

// e.g. 2024-Jan-18 16:38:06.5813052
auto boostSimple = time.toSimpleString();

So, if you want a different format, you'll either need to make one yourself
by calling the various properties on SysTime and passing them to something
like std.format's format to create a string, or there are several packages
on https://code.dlang.org which have functions for doing custom date/time
formatting.

- Jonathan M Davis