Hello,
is it possible to declare an internal variable in "static foreach" and on each iteration assign something to it?
Example:
>static foreach(arg; SomeAliasSeq)
>{
>    internal = arg[0].converted;    // a shortcut for expression "arg[0].converted"
>
>    static if(internal.length == 0) { ... }
>    else static if(internal.isNull) { ... }
>    else { ... }
>}

On Thursday, 30 August 2018 at 08:19:47 UTC, Andrey wrote:
> Hello,
> is it possible to declare an internal variable in "static foreach" and on each iteration assign something to it?
> Example:
>>static foreach(arg; SomeAliasSeq)
>>{
>>    internal = arg[0].converted;    // a shortcut for expression "arg[0].converted"
>>
>>    static if(internal.length == 0) { ... }
>>    else static if(internal.isNull) { ... }
>>    else { ... }
>>}

Add a scope :

static foreach(arg; SomeAliasSeq)
{{
}}

And this should work without complaint about "internal" already existing.

30.08.2018 11:19, Andrey пишет:
> Hello,
> is it possible to declare an internal variable in "static foreach" and on each iteration assign something to it?
> Example:
>> static foreach(arg; SomeAliasSeq)
>> {
>>    internal = arg[0].converted;    // a shortcut for expression "arg[0].converted"
>>
>>    static if(internal.length == 0) { ... }
>>    else static if(internal.isNull) { ... }
>>    else { ... }
>> }
static foreach will be lowered to:
```
{
    auto internal = SomeAliasSeq[0][0].converted;

    static if(internal.length == 0) { ... }
    else static if(internal.isNull) { ... }
    else { ... }

    auto internal = SomeAliasSeq[1][0].converted;

    static if(internal.length == 0) { ... }
    else static if(internal.isNull) { ... }
    else { ... }

    ...

    auto internal = SomeAliasSeq[N][0].converted;   // N == SomeAliasSeq.length

    static if(internal.length == 0) { ... }
    else static if(internal.isNull) { ... }
    else { ... }
}
```
if you use scope it will be
```
{
    {
        auto internal = SomeAliasSeq[0][0].converted;

        static if(internal.length == 0) { ... }
        else static if(internal.isNull) { ... }
        else { ... }
    }

    {
        auto internal = SomeAliasSeq[1][0].converted;

        static if(internal.length == 0) { ... }
        else static if(internal.isNull) { ... }
        else { ... }
    }

    ...

    {
        auto internal = SomeAliasSeq[N][0].converted;   // N == SomeAliasSeq.length

        static if(internal.length == 0) { ... }
        else static if(internal.isNull) { ... }
        else { ... }
    }
}
```
every instance of internal variable will be defined in its own scope

On Thursday, 30 August 2018 at 09:49:15 UTC, drug wrote:
> 30.08.2018 11:19, Andrey пишет:

Thanks everybody. Works!