create fixed length string of characters

[Nick Treleaven]

On Friday, 16 August 2024 at 13:30:53 UTC, IchorDev wrote:
> On Friday, 16 August 2024 at 11:37:08 UTC, Nick Treleaven wrote:
>> On Friday, 16 August 2024 at 06:15:18 UTC, Bruce wrote:
>> ```d
>> string s = a.dup; // copy to heap, assuming you need the data 
>> to escape (use a[] otherwise)
>> s.writeln();
>> ```
>
> I think you meant `idup`? `dup` will make it mutable.

`dup` actually works. I tested the code before posting. It should 
be that `dup` is a template function which gets inferred as 
strongly `pure`, so the result is known to the compiler to be 
unique.

https://dlang.org/spec/function.html#pure-factory-functions

So perhaps `idup` is no longer needed.