Difference between "can call" and "can compile"
schveiguy at gmail.com
Tue Sep 15 19:12:04 UTC 2020
On 9/15/20 10:18 AM, WebFreak001 wrote:
> On Monday, 7 September 2020 at 14:57:24 UTC, Steven Schveighoffer wrote:
>> Consider a template function like this:
>> void foo(T)(T v)
>> auto x = v.someProperty;
> This is already possible from a library solution, see
> However I imagine it is slow because of mixin operations + not well
> defined because it uses stringof, but if you just want it in some small
> project of yours you can just use that.
But that's the issue. If I know what small set of types should work,
then I can just write overloads for those types.
It's when I don't know what type is going to be passed in.
I could probably switch to using "hasMember" in this use case, which is
likely to be correct for all purposes that I have. It's just not
applicable to a public library, which might use things other than members.
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