On Sat, 2017-05-13 at 06:05 +0000, Vladimir Panteleev via Digitalmars- d-learn wrote: > On Saturday, 13 May 2017 at 05:53:25 UTC, Russel Winder wrote: > > Is there a canonical, idiomatic way of processing std.datetime > > objects using std.getopt? > > As std.getopt is going to give you strings, you need to convert > strings to SysTime values, e.g. using fromSimpleString:
std.getopt appears also to be able to deal with integers as well as
strings.
> import std.datetime;
> import std.getopt;
> import std.stdio;
>
> void main()
> {
> string[] args = ["program", "--date", "2017-May-13 05:58:59"];
> SysTime t;
> getopt(args,
> "date", (string _, string s) { t =
> SysTime.fromSimpleString(s);
> },
> );
> writeln(t);
> }
I hadn't realised you could put a function in the argument sequence, I
had the address of the variable to amend:
SysTime t;
auto buffer = t.toISOString();
getopt(args,
"date|d",
"Some explanation of the d option.",
&buffer);
t = SysTime.fromISOString(buffer);
I think I like your way better. :-)
> For more flexibility, you'll need a date parser. Mine is here:
> https://github.com/CyberShadow/ae/blob/master/utils/time/parse.d
I am only interested in ISO8601 dates. However looking at this code is
interesting as I learnt some stuff.
--
Russel.
=============================================================================
Dr Russel Winder t: +44 20 7585 2200 voip: sip:[email protected]
41 Buckmaster Road m: +44 7770 465 077 xmpp: [email protected]
London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
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