On Saturday, 7 July 2018 at 12:13:21 UTC, Alex wrote:
On Saturday, 7 July 2018 at 11:22:38 UTC, Timoses wrote:
Aw, got it. So args is actually a tuple type where accessing
beyond the defined tuple (T) is invalid?
auto a = [1, 2, 4];
// works
pragma(msg, typeof(a[3]));
auto t = tuple(3, 4, 5.3);
// ERROR:
// pragma(msg, typeof(t[3]));
Yes. The absence of the next element in the array, doesn't
matter, while asking its type, while the absence of the next
tuple element means also the absence of any type, as I
understand it.
Hi All,
If we replace the statement as args[$ -1] the program works are
expected, if we apply the same logic in different approach it
does not work, in the below code if we command the first block
"if (fnID == "ListFilesNames") {} " then the second "if (fnID ==
"ListFilesSize") {}" works fine, and vice versa but if both the
"if" block is un-commented it does not work , rather it passes
wrong parameter to the function. Tried change the args as args[$]
, args[1], args[2],
Error:
Test.d(31): Error: function Test.ListFilesSize(string FFs, int
Size) is not callable using argument types (string, Array!string)
VarTest.d(31): cannot pass argument _param_1 of type
Array!string to parameter int Size
Test.d(42): Error: template instance
`Test.process!(Array!string)` error instantiating
Code:
import std.stdio: writeln;
import std.container.array;
import std.algorithm: filter, map;
import std.typecons: Tuple, tuple;
import std.file: dirEntries, isFile, SpanMode;
import std.conv: to;
import std.datetime.systime: Clock, SysTime;
import std.parallelism: parallel, taskPool, TaskPool;
import std.array: empty;
auto ListFilesNames (string FFs) {
auto dFiles = Array!(Tuple!(string, SysTime))(dirEntries(FFs,
SpanMode.shallow).filter!(a => a.isFile).map!(a => tuple(a.name,
a.timeCreated)));
return dFiles;
}
auto ListFilesSize(string FFs, int Size) {
writeln(Size);
auto dFiles = Array!(Tuple!(string, ulong))(dirEntries(FFs,
SpanMode.shallow).filter!(a => a.isFile).map!(a => tuple(a.name,
(a.size > Size).to!ulong)));
return dFiles;
}
void process(T ...)(string fnID, T args) {
if (fnID == "ListFilesNames") {
alias scRType = typeof(ListFilesNames(string.init));
auto PFresult = taskPool.workerLocalStorage!scRType();
foreach (string FFs; args[0]) { PFresult.get ~=
ListFilesNames(FFs); }
foreach(i; PFresult.toRange) { writeln(!i[][].empty); }
}
else if (fnID == "ListFilesSize") {
alias scRType = typeof(ListFilesSize(string.init, ulong.init));
auto PFresult = taskPool.workerLocalStorage!scRType();
foreach (string FFs; args[0]) { PFresult.get ~=
ListFilesSize(FFs, args[$ - 1]); }
foreach(i; PFresult.toRange) { writeln(!i[][].empty); }
}
}
void main() {
Array!string NameDir, SizeDir;
NameDir.insert("C:\\Temp\\BACKUP1");
SizeDir.insert("C:\\Temp\\TEAM1");
int Size = 1;
string fnID1 = "ListFilesNames", fnID2 = "ListFilesSize";
process(fnID1, NameDir);
process(fnID2, SizeDir, Size);
}
From,
Vino.B
