Question about wchar[]

[Ali Çehreli]

On 02/04/2013 10:13 AM, ollie wrote:
 > I am using wchar[] and find the usage clunky. Am I doing something wrong?
 >
 > Example:
 >      // Compiler complains that wchar[] != immutable(char)[]
 >      wchar[] wstr = "This is a wchar[]";

There is nothing but a wchar slice that is going to provide access to 
the chars on the right-hand side. Unfortunately that is not possible 
because neither the right-hand side has wchars nor they are mutable.

 >      // Compiler accepts this
 >      wchar[] wstr = "This is a wchar[]"w.dup;

That's fine: You explicitly make a mutable wchar array.

 >      // Compiler accepts this
 >      wchar[] wstr;
 >      wstr ~= "This is a wchar[]";

That's fine because the binary ~ operator always makes copies of elements.

 > If the compiler knows the type in the last example with concatenation,
 > shouldn't it be able to figure that out in the first example.

The missing bit is that a copy of the char literal itself is not made 
automatically.

Ali