Function Template for Dynamic Parameter

[vino.B]

On Sunday, 1 July 2018 at 12:46:30 UTC, Timoses wrote:
> On Sunday, 1 July 2018 at 11:58:30 UTC, vino.B wrote:
>> On Sunday, 1 July 2018 at 11:52:19 UTC, Alex wrote:
>> NewType.d(19): Error: function declaration without return 
>> type. (Note that constructors are always named this)
>>
>> [...]
>>
>> auto coCleanFiles(T ...)(T args) {
>> 	auto dFiles = Array!(Tuple!(string, SysTime))(dirEntries(FFs, 
>> SpanMode.shallow).filter!(a => a.isFile).map!(a => 
>> tuple(a.name, a.timeLastModified)));
>> 	return dFiles;
>> }
>>
>> void ptManagecoRoutine(T)(T function(T ...)(T args), 
>> Array!string Dirlst) {
>>     alias scRType = typeof(coRoutine(args.init));
>>     auto PFresult = taskPool.workerLocalStorage!scRType;
>>     ReturnType!coRoutine rData;
>>     foreach (string FFs; Dirlst[]) { PFresult.get ~= 
>> coRoutine(FFs.strip); }
>>     foreach(i; PFresult.toRange) { rData ~= i[][]; }
>>     if (!rData[].empty) { rData[].sort!((a,b) => a[1] < 
>> b[1]).each!(e => writefln!"%-83s %.20s"(e[0], 
>> e[1].to!string)); }
>> }
>>  void main () {
>>  Array!string CleanDirlst;
>>  CleanDirlst.insertBack("C:\\Temp\\BACKUP1");
>>  ptManagecoRoutine(&coCleanFiles, CleanDirlst);
>>  }
>
>
> auto coCleanFiles(T ...)(T args)
> { ... }
>
> void ptManagecoRoutine(T)(T fun, Array!string DirList)
> {
>     foreach (dir; DirList)
>         fun(dir);
> }
>
> or
>
>  void ptManagecoRoutine2(alias func)(Array!string DirList)
>        if (is (typeof(func!(typeof(DirList[0]))) == function))
>  {
>      alias t = typeof(DirList[0]);
>      ptManagecoRoutine(&func!t, DirList);
>  }
>
> callable via
>
> Array!string CleanDirlst;
> ptManagecoRoutine(&coCleanFiles!string, CleanDirlst);
> ptManagecoRoutine2!coCleanFiles(CleanDirlst);

Hi All,

   Request your help on the below code

auto coCleanFiles(T ...) (T FFs) {
     auto dFiles = Array!(Tuple!(string, SysTime))(dirEntries(FFs, 
SpanMode.depth).map!(a => tuple(a.name, a.timeCreated)));
	return dFiles;
}

void process(T)(T pfunction, Array!string Dirlst) {
alias wlsType = typeof(pfunction(T));
auto Result = taskPool.workerLocalStorage!wlsType();
foreach (FFs; parallel(Dirlst[],1)) { Result.get ~= 
pfunction(FFs); }
foreach(i; Result.toRange) { writeln(i[][]); }
}

void main() {
Array!string Cleanlst;
Cleanlst.insert("C:\\Temp\\BACKUP1");
process(&coCleanFiles, Cleanlst);
}

Error : Error: coCleanFiles(T...)(T FFs) is not an lvalue and 
cannot be modified

From,
Vino.B