On Friday, 4 January 2019 at 10:34:07 UTC, Basile.B wrote:
Show us some code.

Here is the simple example:

https://run.dlang.io/gist/1a06dd703bea5548ee72b4713a7ce5f6

The thing I'm trying to do is to make an experimental port (for education purposes) of https://github.com/fthomas/refined library for Scala, which allows to set constraints on basic types like numeric, bool, string, etc.

For example, you can force an integer variable to take a range between 0 and 15. And if constraint is not satisfied, you get a compile time error.

There is no predicate in my example, but even if I add one (using alias template parameter), it shows the same error.

So is that possible in D?

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