iz v0.6.18 - Now with a modern, fast, @safe, getopt-like function

[Basile B.]

On Monday, 28 May 2018 at 00:53:45 UTC, Basile B. wrote:
> Last time i promoted my stuff here there were two 
> compiler/Phobos bugs preventing to activate this nice 
> getopt-like function.
>
> specs:
>
> - It's based on UDA.
> - It supports multiple locations for UDA-fied functions and 
> variables.
> - It doesn't use pointers, UDA-ified variable are accessed 
> without intermediary.
> - It's faster than the phobos one (although getopt is never a 
> bottleneck)
> - It's `@safe` and can be even `nothrow`
>
> It could be easily added to phobos (just need to convert some 
> EnumSet to BitFlag).
>
> - code: 
> https://github.com/BBasile/iz/blob/master/import/iz/options.d#L596
> - DUB: https://code.dlang.org/packages/iz
> - doc: 
> https://iz.dpldocs.info/v0.6.18/iz.options.handleArguments.html
> - cool demo: 
> https://github.com/BBasile/Coedit/blob/master/dastworx/src/main.d#L18
>
> Note that despite of the run-time compatibility mention in the 
> README, this module is part of a subset of IZ that can be used 
> without all the concept of Nogc as used in iz. (at some point i 
> should split the twos parts).

such attribute-based getopt is now used in styx driver e.g

- 
[here](https://gitlab.com/styx-lang/styx/-/blob/master/src/styx/session.sx?ref_type=heads#L107)
- 
[here](https://gitlab.com/styx-lang/styx/-/blob/master/src/styx/session.sx?ref_type=heads#L492)

In styx now I just do

```
if !getOpt![(session, DriverOptions, 
MachineTarget)](processCeeArgs(argc, argv), &onArgument) do
         return 1;
```

At some point we forgot what we wanted to do in D ;)