On Saturday, 14 July 2018 at 17:20:52 UTC, Ali Çehreli wrote:
First, please show us code that demonstrates the issue.
On 07/14/2018 07:47 AM, vino.B wrote:
> The reason it never prints the text "Empty" is that the
out of the
> "r" is just an empty array.
>
> OUTPUT:
> []
> []
If that's the output of r, then r is not empty but has two
elements and those elements are likely arrays. If they are in
fact arrays, them being empty does not change r: it still has
two elements.
If you want to treat the range as empty when all its elements
are empty, then perhaps your problem needs
std.algorithm.joiner. The following program demonstrates your
issue with the first assert and the fix with the second assert:
import std.algorithm;
import std.range;
void main() {
int[][] r = [ [], [] ];
assert(!r.empty);
auto joined_r = r.joiner;
assert(joined_r.empty);
}
joiner joins elements that are ranges themselves. For example,
joiner([ [1], [2] ]) is equal to [ 1, 2 ].
Ali
HI Ali,
Thank you very much, but unfortunately the above solution did
not work as the variable PFResult contains the output from the
workerLocalStorgage which is prited as PFResult.toRange , but was
able to find a solution as below
void ptThreadManager(alias coRoutine, T...)(Array!string Dirlst,
T params)
{
alias scRType = typeof(coRoutine(string.init, T.init));
auto PFresult = taskPool.workerLocalStorage!scRType();
PFresult.get ~= coRoutine(FFs, params); }
int a = 0;
if (!(PFresult.toRange).empty) {
foreach(i; chain(PFresult.toRange)) { writeln(i[]); a = a
+1;} }
if(a == 0) { writeln("No files");
}
From,
Vino.B
