Fold in Parallelism

[Vino]

HI All,

  As per the document form std.parallelism it states that we can 
use taskPool.reduce so can we use the same for fold 
(taskPool.fold) as basically both are same with slight variation 
on seed values, if possible can can we define the same in the 
below lines

Tried the below but getting an error
auto SdFiles = Array!ulong(dirEntries("C:\\TEMP\\BACKUP", 
SpanMode.depth).map!(a => a.size).taskPool.fold!((a,b) => a + b) 
(x))[];
Error : Srvnscleaner.d(89): Error: function 
std.parallelism.taskPool () is not callable using argument types 
(MapResult!(__lambda2, DirIterator))

auto SdFiles = Array!ulong(dirEntries("C:\\TEMP\\BACKUP", 
SpanMode.depth).map!(a => a.size).fold!((a,b) => a + b) 
(x)).taskPool[];

Error : Size.d(89): Error: function std.parallelism.taskPool () 
is not callable using argument types (Array!ulong)


From,
Vino.B