Re: std.getopt and std.datetime
On Sat, 2017-05-13 at 02:23 -0700, Jonathan M Davis via Digitalmars-d- learn wrote: > […] > At best, it's slang. It's not proper anything. > > https://github.com/dlang/phobos/pull/5388 > > - Jonathan M Davis Indeed. Thanks for getting a pull request in to ameliorate the difficulty. -- Russel. = Dr Russel Winder t: +44 20 7585 2200 voip: sip:russel.win...@ekiga.net 41 Buckmaster Roadm: +44 7770 465 077 xmpp: rus...@winder.org.uk London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder signature.asc Description: This is a digitally signed message part
Re: std.getopt and std.datetime
On Saturday, May 13, 2017 06:53:25 Russel Winder via Digitalmars-d-learn wrote: > Is there a canonical, idiomatic way of processing std.datetime objects > using std.getopt? > > Currently, I am suffering: > > /usr/include/d/std/getopt.d(921): Error: static assert "Dunno how to deal > with type SysTime*" > > which on the one hand is understandable, albeit dreadful English, but > then I suppose it is American not English At best, it's slang. It's not proper anything. https://github.com/dlang/phobos/pull/5388 - Jonathan M Davis
Re: std.getopt and std.datetime
On Sat, 2017-05-13 at 06:05 +, 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.",
);
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:russel.win...@ekiga.net
41 Buckmaster Roadm: +44 7770 465 077 xmpp: rus...@winder.org.uk
London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
signature.asc
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Re: std.getopt and std.datetime
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:
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);
}
For more flexibility, you'll need a date parser. Mine is here:
https://github.com/CyberShadow/ae/blob/master/utils/time/parse.d
std.getopt and std.datetime
Is there a canonical, idiomatic way of processing std.datetime objects using std.getopt? Currently, I am suffering: /usr/include/d/std/getopt.d(921): Error: static assert "Dunno how to deal with type SysTime*" which on the one hand is understandable, albeit dreadful English, but then I suppose it is American not English, as std.getopt is only going to process builtin types, but it is very annoying. -- Russel. = Dr Russel Winder t: +44 20 7585 2200 voip: sip:russel.win...@ekiga.net 41 Buckmaster Roadm: +44 7770 465 077 xmpp: rus...@winder.org.uk London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder signature.asc Description: This is a digitally signed message part
