Random access range
Xinok
xinok at live.com
Thu Mar 8 09:04:37 PST 2012
On Thursday, 8 March 2012 at 16:43:25 UTC, zeljkog wrote:
> import std.stdio;
>
> struct Rar{
> int[] data = [1,3,5];
> int length = 3;
> ref int opIndex(int i){ return data[i];}
> }
>
> void main() {
> Rar x;
> foreach (e; x)
> writeln(e);
> }
>
> Error: invalid foreach aggregate x
> ----
>
> Is'nt Rar valid random access range?
struct N(T){
T[] arr;
this(T[] other){ arr = other; }
this(N other){ arr = other.arr; }
// The declarations below are required
// The @property tag is also required
ref T opIndex(size_t i){ return arr[i]; }
@property size_t length(){ return arr.length; }
@property ref T front(){ return arr.front; }
@property ref T back(){ return arr.back; }
void popFront(){ arr.popFront(); }
void popBack(){ arr.popBack(); }
@property bool empty(){ return arr.empty; }
@property N save(){ return N(arr); }
}
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