Search elemnt in Compile-time Argument List of strings

[Steven Schveighoffer via Digitalmars-d-learn]

On 7/26/16 4:58 PM, ParticlePeter wrote:
> On Tuesday, 26 July 2016 at 20:18:48 UTC, Steven Schveighoffer wrote:
> ....
>> void processMember( T, ignore... )() {
>>   foreach( member; __traits( allMembers, T )) { // this is a
>> compile-time list, so it's a static foreach.
>>     foreach(i, arg; ignore ){ // i is the index into the ignore tuple
>>       static if( arg == member ) break; // break out of the foreach
>> loop, need to ignore it.
>>       else static if(i + 1 == arg.length) // this is the last element!
>>       {
>>       // process member here, generate e.g. setter function as string
>> mixin
>>       }
>>     }
>>   }
>> }
>
> There is one problem with this approach, ignore might be empty (I should
> have mentioned it). Would you know a workaround for that case as well?

Hm... good point :)

Here is a workaround:

foreach(i, arg; AliasSeq!(ignore, "SENTINEL"))
    static if(i == ignore.length)
    {
       // process, it's good
    }
    else static if(arg == member) break;

-Steve