www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.learn - Using Parallel prints duplicates nor misses.

Hi,

  Request your help, the below code sometime prints duplicate and 
some time miss the entry. due to which any code written below the 
line "foreach (d; parallel(dFiles[], 1))" are some time 
duplicated and some time not executed(skips). tired adding sort 
and uniq to the writeln but no luck.


Code:
import std.algorithm: filter, map, sort, uniq;
import std.container;
import std.file: SpanMode, dirEntries, isDir;
import std.stdio: writeln;
import std.parallelism: parallel;

void main () {
   	auto SizeDirlst = Array!string ("C:\\Temp\\TEAM\\BACKUP", 
"C:\\Temp\\TEAM\\EXPORT");
	foreach (FFs; SizeDirlst[]) {
	auto dFiles = Array!string ((dirEntries(FFs, 
SpanMode.shallow).filter!(a => a.isDir))[].map!(a => a.name));
	foreach (d; parallel(dFiles[], 1)) { writeln(d); }
	}
	}

Output 1:

C:\Temp\TEAM\BACKUP\dir1
C:\Temp\TEAM\BACKUP\DND3
C:\Temp\TEAM\BACKUP\dir2  - Duplicate
C:\Temp\TEAM\BACKUP\dir2  - Duplicate
C:\Temp\TEAM\EXPORT\DND6

Output 2:
C:\Temp\TEAM\BACKUP\dir1
C:\Temp\TEAM\BACKUP\DND3
C:\Temp\TEAM\BACKUP\dir2  - Duplicate
C:\Temp\TEAM\BACKUP\dir2  - Duplicate


C:\Temp\TEAM\EXPORT\DND6  - Missing

From,
Vino.B
Sep 17