sortUniq

[zeljkog via Digitalmars-d]

On 24.01.15 12:50, Peter Alexander wrote:
> auto f = unique();
> [1, 5, 5, 2, 1, 5, 6, 6].filter!(f).writeln;  // [1, 5, 2, 6]
> 
> Filter needs an alias, and you cannot alias an R-value (it has no symbol).

Yes, I see :)

But I think this should be supported by std.algorithm:

import std.stdio, std.algorithm;

struct Uniq{
    bool[int] c;
    bool opCall(int a){
        if (a in c)
            return false;
        else{
            c[a] = true;
            return true;
        }
    }
}

void main()
{
    [1, 5, 5, 2, 1, 5, 6, 6].filter!Uniq.writeln;
}