compile-time opIndex
Steven Schveighoffer via Digitalmars-d
digitalmars-d at puremagic.com
Thu Dec 18 07:47:24 PST 2014
On 12/18/14 10:43 AM, Steven Schveighoffer wrote:
> struct KeyValuePair(K, V)
> {
> K key;
> V value;
> enum length = 2;
> ref K opTupleIndex(int x) if(x == 0) { return key;}
> ref V opTupleIndex(int x) if(x == 1) { return value;}
> }
>
Or with more recent changes to the compiler:
template opTupleIndex(int x) if (x == 0) { alias opTupleIndex = key;}
template opTupleIndex(int x) if (x == 1) { alias opTupleIndex = value;}
-Steve
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