Hi,

After some feedback from the community [0], I'm happy to finally get the optional package to a 1.0.0 version. There is one breaking change with how pointer semantics behave, in that the previous version treated some!(int*)(null) as a non-empty optional, and some!Class(null) as an empty optional. These are both now treated as empty optionals.

Compilation changes include:
* orElse has been split in to "or" and "frontOr"
* dispatch() has been renamed to oc(); "optional chain"
* NotNull has been removed
* unwrap has been removed

Additions include:
* frontOrThrow: if there's no front of range then it will throw.
* or/frontOr work with any range, and Nullable!T.
* match will resolve to void if any of the handlers return void.

Added a whole bunch of "safety" checks, so CI runs with dip1000 and dip25 enabled, and uses LLVM's address sanitizer. I still don't know how to deal with auto ref return values [1] so if anyone has any tips...

I'll remove the beta status after a few weeks if there're no issues.

Cheers,
- ali

[0] https://forum.dlang.org/thread/borsieulsqyzrfaysiqu@forum.dlang.org
[1] https://issues.dlang.org/show_bug.cgi?id=20084

On Monday, 29 July 2019 at 22:17:20 UTC, aliak wrote:
> Hi
>
> 

Link: https://code.dlang.org/packages/optional

On Monday, 29 July 2019 at 22:17:20 UTC, aliak wrote:
> [...]
>
> * dispatch() has been renamed to oc(); "optional chain"

Why not 'chain()' or 'optionalChain()'?

On Tuesday, 30 July 2019 at 04:18:28 UTC, Les De Ridder wrote:
> On Monday, 29 July 2019 at 22:17:20 UTC, aliak wrote:
>> [...]
>>
>> * dispatch() has been renamed to oc(); "optional chain"
>
> Why not 'chain()' or 'optionalChain()'?

Only because chain is in range and optionalChain is too long 🤷‍♂️.

On Monday, 29 July 2019 at 22:17:20 UTC, aliak wrote:
> * NotNull has been removed

Why was it removed. It seems like this would be nice to have for class and pointers.

On Tuesday, 30 July 2019 at 12:58:08 UTC, Jesse Phillips wrote:
> On Monday, 29 July 2019 at 22:17:20 UTC, aliak wrote:
>> * NotNull has been removed
>
> Why was it removed. It seems like this would be nice to have for class and pointers.

I personally didn't find use for it, too much friction to use. I have not gotten the impression that it's useful form others either? If people were using it I'll gladly put it back in as a subpackage or something (or just make another package).

On Tuesday, 30 July 2019 at 10:04:03 UTC, aliak wrote:
> On Tuesday, 30 July 2019 at 04:18:28 UTC, Les De Ridder wrote:
>> On Monday, 29 July 2019 at 22:17:20 UTC, aliak wrote:
>>> [...]
>>>
>>> * dispatch() has been renamed to oc(); "optional chain"
>>
>> Why not 'chain()' or 'optionalChain()'?
>
> Only because chain is in range and optionalChain is too long 🤷‍♂️.

I would have voted for "optChain()"

On Tuesday, 30 July 2019 at 14:34:19 UTC, aliak wrote:
> On Tuesday, 30 July 2019 at 12:58:08 UTC, Jesse Phillips wrote:
>> On Monday, 29 July 2019 at 22:17:20 UTC, aliak wrote:
>>> * NotNull has been removed
>>
>> Why was it removed. It seems like this would be nice to have for class and pointers.
>
> I personally didn't find use for it, too much friction to use. I have not gotten the impression that it's useful form others either? If people were using it I'll gladly put it back in as a subpackage or something (or just make another package).

Don't worry at this point. I still need to try out this library with my own code, appears much nicer than nullible.