mutable string

[Adam Sansier via Digitalmars-d-learn]

On Sunday, 10 July 2016 at 21:26:29 UTC, Adam Sansier wrote:
> For example, I'm trying to compare a wchar buffer with a 
> wstring using slices:
>
> x[0..$] == y[0..$]
>
> It fails. I think because x has length 1024. If do
>
> x[0..y.length] == str[0..y.length]
>
> it fails, also because y has length 1024(since it was generated 
> from a buffer and the length wasn't set correctly).
>
> If I fix the length to the size of y, it passes, but isn't 
> correct since it is a partial match.
>
> also, to lower fails but CharLowerBuff passes(the error in the 
> previous post)
>
> 	//str = str.toLower();	
> 	CharLowerBuff(cast(LPTSTR)str, str.length);

Using this code

import core.stdc.wchar_; // For wcslen.

wstring toWstring(wchar[] value)
{
      return value ? cast(wstring) 
value[0..wcslen(cast(wchar*)value)] : null;
}


works and sets the length. Must be a bug in to!wstring!