On Thursday, 8 April 2021 at 18:06:25 UTC, Meta wrote:
On Thursday, 8 April 2021 at 18:01:56 UTC, Meta wrote:
On Thursday, 8 April 2021 at 12:19:29 UTC, WebFreak001 wrote:

```d
string to01String(int[] x) @safe
{
auto conv = x.to!(ubyte[]); // allocates new array, so later cast to string is OK conv[] += '0'; // assume all numbers are 0-9, then this gives the correct result
    return (() @trusted => cast(string)conv)();
}
```

The @trusted lambda can also be replaced with [std.exception.assumeUnique](https://dlang.org/library/std/exception/assume_unique.html).

Never mind me, assumeUnique is @system (or at least it's inferred as @system), and anyway, you can't implicitly convert `immutable(ubyte)[]` to `immutable(char)[]`.

It has to be. It's not `@safe` quite obviously.

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