On Wednesday, 21 August 2019 at 13:56:51 UTC, Eugene Wissner
wrote:
On Wednesday, 21 August 2019 at 13:41:20 UTC, Orfeo wrote:
I've:
```
module anomalo.util;
// Foo doesn't exist anywhere!
Foo toJsJson(string type, Args...)(string id, Args args) {
static if (type == "int" || type == "outcome") {
return Json(["id" : Json(id), "type" : Json(type),
"value" : Json(0),]);
} else {
static assert(0, "invalid type");
}
}
```
So:
```
$ dub build
```
No error!
```
$ /usr/bin/dmd -lib -ofliba.a -debug -g -w -I.
src/anomalo/util.d -vcolumns
```
No error!
Here [github](https://github.com/o3o/anomalo) my project.
Thank you
toJsJson is a template. Templates are evaluated first when they
are instantiated. Compiler doesn't give an error because it
doesn't compile toJsJson, because you don't instantiate it
anywhere.
You're right: if I add (into util.d)
```
unittest {
import std.stdio;
writeln(toJsJson!"int"("a"));
}
```
voila' :
```
$ dub test
src/anomalo/util.d(3,5): Error: undefined identifier Foo
src/anomalo/util.d(13,26): Error: template instance
`anomalo.util.toJsJson!"int"` error instantiating
/usr/bin/dmd failed with exit code 1.
```
Thank you
