Generating switch at Compile Time

[Jesse Phillips via Digitalmars-d-learn]

On Thursday, 13 April 2017 at 21:33:28 UTC, ag0aep6g wrote:
> That's not a static foreach. It's a normal run-time foreach. 
> The switch jumps into the loop body without the loop head ever 
> executing. The compiler is correct when it says that 
> initialization of li is being skipped.

Good good. I did miss that as I was trying different things.

> Make `list` an enum or alias instead. Then the foreach is 
> unrolled at compile time, you don't get a deprecation message, 
> and it works correctly.

Yes it did.

> By the way, in my opinion, `case li[0]:` shouldn't compile with 
> the static immutable `list`. `list` and `li[0]` are dynamic 
> values. The compiler only attempts (and succeeds) to evaluate 
> them at compile time because they're typed as immutable. The 
> way I see it, that only makes things more confusing.

This is very interesting. I wonder if the compiler is still 
unrolling the loop at compile time since it functions as 
expected; It certainly needs that deprecation though.