Re: Picking function templates with __traits(getOverloads, ..., true)
On Thursday, 30 July 2020 at 00:27:49 UTC, user1234 wrote: On Wednesday, 29 July 2020 at 23:57:21 UTC, Jean-Louis Leroy wrote: This works: [...] I may be missing the obvious...or it's a compiler bug??? Yes and it's just been fixed, see https://github.com/dlang/dmd/pull/11431. So uncommenting the second times works on ~master. Ah thanks! In the meantime I realized that picking the overload at index 1 works. That's the difference between 'foo' and 'times'. Then I was 80% sure it was a bug.
Re: Picking function templates with __traits(getOverloads, ..., true)
On Wednesday, 29 July 2020 at 23:57:21 UTC, Jean-Louis Leroy wrote: This works: [...] I may be missing the obvious...or it's a compiler bug??? Yes and it's just been fixed, see https://github.com/dlang/dmd/pull/11431. So uncommenting the second times works on ~master.
Picking function templates with __traits(getOverloads, ..., true)
This works:
module test;
void foo(T)(T a, T b) {}
void foo(T)(char a, T b) {}
template InstantiateTemplateAt(alias Module, string name, int
index, T...) {
alias Template = __traits(getOverloads, test, name,
true)[index];
alias InstantiateTemplateAt = Template!(T);
}
pragma(msg, typeof(InstantiateTemplateAt!(test, "foo", 1, int)));
// pure nothrow @nogc @safe void(char a, int b)
class Matrix(T) {}
Matrix!T times(T)(Matrix!T a, T b);
// Matrix!T times(T)(T a, Matrix!T b); // <-- second 'times'
overload
pragma(msg, typeof(InstantiateTemplateAt!(test, "times", 0,
int)));
// Matrix!int(Matrix!int a, int b)
But if I uncomment the second 'times' function template, I get an
error:
templateoverloads.d(8): Error: template `test.times` matches more
than one template declaration:
templateoverloads.d(16): `times(T)(Matrix!T a, T b)`
and
templateoverloads.d(17): `times(T)(T a, Matrix!T b)`
templateoverloads.d(19): Error: template instance
`test.InstantiateTemplateAt!(test, "times", 0, int)` error
instantiating
_error_
I may be missing the obvious...or it's a compiler bug???
(not sure if this belongs to the Learn section either)
Re: is using predSwitch the only way to create to create recursive functions in D ?
On 7/29/20 3:13 PM, Andy Balba wrote:
,,
Not at all. The wording in the documentation is misleading.
Recursive functions are as trivial as they are:
int foo(uint i) {
if (i == 0) {
return 42;
}
return foo(i - 1);
}
void main() {
assert(foo(7) == 42);
}
Ali
is using predSwitch the only way to create to create recursive functions in D ?
,,
Re: dub build to generate different kinds of libs
On Wednesday, 29 July 2020 at 17:42:20 UTC, jeff thompson wrote: On Wednesday, 29 July 2020 at 13:26:45 UTC, Andre Pany wrote: On Tuesday, 28 July 2020 at 22:10:58 UTC, jeff thompson wrote: On Tuesday, 28 July 2020 at 22:08:14 UTC, Steven Schveighoffer wrote: [...] Thanks Steve!, ya i know i can call build twice but i was wondering if there was any config magic for dub to make it output multiple library types in one call to build As far as I remember if you set the targetType of the main package to none it build all the sub packages in one call. Therefore you have 2 sub packages instead of 2 configurations. But I have to say I have never done it myself, but just saw the pr which should implement this behavior. Kind regards Andre Awesome, cant wait to get that ability, as far as my issue i was being a D newb and was setting everything up incorrectly. Im all good now. Thanks -J Here the example from the dub repository https://github.com/dlang/dub/tree/814b06edb304701a41b97f98973bdae7870d4d8b/test/issue97-targettype-none Kind regards Andre
Re: dub build to generate different kinds of libs
On Wednesday, 29 July 2020 at 13:26:45 UTC, Andre Pany wrote: On Tuesday, 28 July 2020 at 22:10:58 UTC, jeff thompson wrote: On Tuesday, 28 July 2020 at 22:08:14 UTC, Steven Schveighoffer wrote: [...] Thanks Steve!, ya i know i can call build twice but i was wondering if there was any config magic for dub to make it output multiple library types in one call to build As far as I remember if you set the targetType of the main package to none it build all the sub packages in one call. Therefore you have 2 sub packages instead of 2 configurations. But I have to say I have never done it myself, but just saw the pr which should implement this behavior. Kind regards Andre Awesome, cant wait to get that ability, as far as my issue i was being a D newb and was setting everything up incorrectly. Im all good now. Thanks -J
Re: dub build to generate different kinds of libs
On Tuesday, 28 July 2020 at 22:10:58 UTC, jeff thompson wrote: On Tuesday, 28 July 2020 at 22:08:14 UTC, Steven Schveighoffer wrote: On 7/28/20 5:50 PM, jeff thompson wrote: Hello Im brand new to D (loving it btw!) and have decided to build a largish windows project in the language. First question, is there a dub.json setup to have a dub build to generate multiple binaries in one call? Like a dll and a static lib. Seems like it would be easy maybe im missing something obvious? Like a configuration with multiple targetTypes. Yes, just do that (make multiple configurations) You just have to build them separately: dub build --config=library dub build --config=application -Steve Thanks Steve!, ya i know i can call build twice but i was wondering if there was any config magic for dub to make it output multiple library types in one call to build As far as I remember if you set the targetType of the main package to none it build all the sub packages in one call. Therefore you have 2 sub packages instead of 2 configurations. But I have to say I have never done it myself, but just saw the pr which should implement this behavior. Kind regards Andre
