Re: How to reverse char[]?

[Timon Gehr]

On 02/08/2012 02:29 AM, H. S. Teoh wrote:
Hi all,
I'm trying to reverse a character array. Why doesn't the following work?

        import std.algorithm;
        void main() {
                char[] array = ['a', 'b', 'c'];
                reverse(array);
        }

I get:

Error: template std.algorithm.reverse(Range) if (isBidirectionalRange!(Range)&& 
 hasSwappableElements!(Range)) does not match any function template declaration
Error: template std.algorithm.reverse(Range) if (isBidirectionalRange!(Range)&& 
 hasSwappableElements!(Range)) cannot deduce template function from argument types 
!()(char[])


T


char[] is handled by Phobos as a range of dchar, ergo it does not have 
swappable elements. Apparently there is no template specialisation of 
'reverse' that handles narrow strings, you might want to file an 
enhancement request.