On Fri, 25 Aug 2023 09:45:09 GMT, Johan Sjölen <[email protected]> wrote:
>> This code looks similar to a capturing lambda. Would an alternative be to
>> use that instead and let the calling code be changed to:
>>
>>
>> int i = lgrp_spaces()->find([&](LGRPSpace* space) {
>> return space->lgrp_id() == lgrp_id;
>> });
>>
>>
>> Alternatively:
>>
>> auto matches_lgrp_id = [&](LGRPSpace* space) {
>> return space->lgrp_id() == lgrp_id;
>> };
>>
>> int i = lgrp_spaces()->find(matches_lgrp_id);
>
> We could just as well do a capturing lambda here, yes. Then we'd have:
>
> ```c++
> template<F>
> int find(F finder);
>
>
> It'd be a template instead of function pointer since it's a capturing lambda
> and `std::function` is not permitted in Hotspot AFAIK.
>
> As an aside, to clarify for readers: There's a `&` missing in the capture
> list of your examples.
Updated in-place
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PR Review Comment: https://git.openjdk.org/jdk/pull/15418#discussion_r1305517877
