Now that's a DIP that could use some love
Andrei Alexandrescu
SeeWebsiteForEmail at erdani.org
Thu Sep 17 21:55:22 UTC 2020
On 9/17/20 5:39 PM, Jonathan M Davis wrote:
> private traits in the public constraints. But even then, the actual template
> constraints are pretty short, and the traits used are descriptive enough
> that I wouldn't expect them to be hard to understand or that repeating them
> in English text would help much.
Here goes, straight from the horse's mouth
(https://dlang.org/library/std/algorithm/iteration/each.each.html):
Flag!"each" each(Range) (
Range r
)
if (!isForeachIterable!Range && (isRangeIterable!Range ||
__traits(compiles, typeof(r.front).length)));
Flag!"each" each(Iterable) (
auto ref Iterable r
)
if (isForeachIterable!Iterable || __traits(compiles,
Parameters!(Parameters!(r.opApply))));
Compare to "`each` requires type MyRange to work with foreach".
Let's see:
"pretty short" .................................................. FAIL
"descriptive enough" ............................................ FAIL
"wouldn't expect them to be hard to understand" ................ FAIL
"repeating them in English text wouldn't help much" ............. FAIL
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