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

[Basile B. via Digitalmars-d-announce]

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 ;)