Re: Delegates and values captured inside loops

[ryuukk_ via Digitalmars-d-learn]

On Saturday, 20 January 2024 at 15:59:59 UTC, Anonymouse wrote:
I remember reading this was an issue and now I ran into it 
myself.

```d
import std.stdio;

void main()
{
    auto names = [ "foo", "bar", "baz" ];
    void delegate()[] dgs;

    foreach (name; names)
    {
        dgs ~= () => writeln(name);
    }

    foreach (dg; dgs)
    {
        dg();
    }
}
```

Expected output: `foo`, `bar`, `baz`
Actual output:   `baz`, `baz`, `baz`

If I make `names` an `AliasSeq` it works, but I need it to be a 
runtime array.

Is there a workaround?


```d
import std.stdio;

void main()
{
    auto names = [ "foo", "bar", "baz" ];
    void delegate()[] dgs;


    foreach (name; names)
    {
        (it) {
            dgs ~= () => writeln(it);
        }(name);
    }

    foreach (dg; dgs)
    {
        dg();
    }
}
```

This is the workaround according to: 
https://issues.dlang.org/show_bug.cgi?id=21929#c9