[Issue 17263] Issue diagnostic if mandatory template parameter is missing

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17263

Jonathan M Davis <issues.dlang at jmdavisProg.com> changed:

           What    |Removed                     |Added
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                 CC|                            |issues.dlang at jmdavisProg.co
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--- Comment #1 from Jonathan M Davis <issues.dlang at jmdavisProg.com> ---
Yeah, this is one of those that's usually surprisingly hard to figure out. I
usually end up doing a lot of examination of template constraints before I
figure out that I simply forgot the !. It's a lot more obvious in this example,
because it's short, but one you start chaining templates or having complicated
predicates, it quickly becomes non-obvious that the ! is missing.

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