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digitalmars.D.learn - Container Array or tuples Sorting

reply Vino <vino.bheeman hotmail.com> writes:
Hi All,

  Request your help, on how to sort a tuple container array, I 
have raised the same topic in one of the other thread "Tuple 
Array Sorting" and was addressed to use standard array rather 
than container array, and i am not able to find any document or 
example in the library for the same.

Eg: Program.
import std.algorithm: filter, map, sort;
import std.container.array;
import std.file: SpanMode, dirEntries, isDir ;
import std.stdio: writeln;
import std.typecons: Tuple, tuple;
import std.datetime.systime: SysTime;

void main () {
auto FFs =  ["C:\\Temp\\BACKUP", "C:\\Temp\\EXPORT"];
Array!(Tuple!(string, SysTime)) Result;
foreach(d; FFs[]) {
auto dFiles = Array!(Tuple!(string, SysTime))(dirEntries(d, 
SpanMode.shallow).filter!(a => a.isDir)
	.sort!((a,b) => a.timeCreated > b.timeCreated)
	.map!(a => tuple(a.name, a.timeCreated)));
writeln(dFiles[]);
} }

From,
Vino.B
Dec 13 2017
parent reply Vino <vino.bheeman hotmail.com> writes:
On Wednesday, 13 December 2017 at 15:16:50 UTC, Vino wrote:

 Hi All,

  Request your help, on how to sort a tuple container array, I 
 have raised the same topic in one of the other thread "Tuple 
 Array Sorting" and was addressed to use standard array rather 
 than container array, and i am not able to find any document or 
 example in the library for the same.

 Eg: Program.
 import std.algorithm: filter, map, sort;
 import std.container.array;
 import std.file: SpanMode, dirEntries, isDir ;
 import std.stdio: writeln;
 import std.typecons: Tuple, tuple;
 import std.datetime.systime: SysTime;

 void main () {
 auto FFs =  ["C:\\Temp\\BACKUP", "C:\\Temp\\EXPORT"];
 Array!(Tuple!(string, SysTime)) Result;
 foreach(d; FFs[]) {
 auto dFiles = Array!(Tuple!(string, SysTime))(dirEntries(d, 
 SpanMode.shallow).filter!(a => a.isDir)
 	.sort!((a,b) => a.timeCreated > b.timeCreated)
 	.map!(a => tuple(a.name, a.timeCreated)));
 writeln(dFiles[]);
 } }

 From,
 Vino.B


HI All,

   As per the message from the below forum  I understand that that 
we cannot perform a sorting on filtered result a container array 
but the same can be performed form the standard array, so i 
adjusted the above code as below and getting a different error 
than what is discussed in the forum.

Forum:
  
"https://forum.dlang.org/post/mcteinnryudlqvbkqttz forum.dlang.org"

Program:
void main () {
auto FFs =  ["C:\\Temp\\sapnas2\\BACKUP", 
"C:\\Temp\\sapnas2\\EXPORT"];
Array!(Tuple!(string, SysTime)) Result;
foreach(d; FFs[]) {
auto dFiles = Array!(Tuple!(string, SysTime))(dirEntries(d, 
SpanMode.shallow).filter!(a => a.isDir).map!(a => tuple(a.name, 
a.timeCreated)))[]
	.sort!((a,b) => a[1] > b[1]);
writeln(dFiles[]);
} }

Error:
Message.d(14): Error: function 
Message.main.SortedRange!(RangeT!(Array!(Tuple!(string, 
SysTime))), __lambda3).SortedRange.opSlice (uint a, uint b) is 
not callab
le using argument types ()
Failed: ["dmd", "-v", "-o-", "Message.d", "-I."]

From,
Vino.B
Dec 13 2017
parent Vino <vino.bheeman hotmail.com> writes:
On Wednesday, 13 December 2017 at 15:58:40 UTC, Vino wrote:

 On Wednesday, 13 December 2017 at 15:16:50 UTC, Vino wrote:

 Hi All,

  Request your help, on how to sort a tuple container array, I 
 have raised the same topic in one of the other thread "Tuple 
 Array Sorting" and was addressed to use standard array rather 
 than container array, and i am not able to find any document 
 or example in the library for the same.

 Eg: Program.
 import std.algorithm: filter, map, sort;
 import std.container.array;
 import std.file: SpanMode, dirEntries, isDir ;
 import std.stdio: writeln;
 import std.typecons: Tuple, tuple;
 import std.datetime.systime: SysTime;

 void main () {
 auto FFs =  ["C:\\Temp\\BACKUP", "C:\\Temp\\EXPORT"];
 Array!(Tuple!(string, SysTime)) Result;
 foreach(d; FFs[]) {
 auto dFiles = Array!(Tuple!(string, SysTime))(dirEntries(d, 
 SpanMode.shallow).filter!(a => a.isDir)
 	.sort!((a,b) => a.timeCreated > b.timeCreated)
 	.map!(a => tuple(a.name, a.timeCreated)));
 writeln(dFiles[]);
 } }

 From,
 Vino.B


 HI All,

   As per the message from the below forum  I understand that 
 that we cannot perform a sorting on filtered result a container 
 array but the same can be performed form the standard array, so 
 i adjusted the above code as below and getting a different 
 error than what is discussed in the forum.

 Forum:
  
 "https://forum.dlang.org/post/mcteinnryudlqvbkqttz forum.dlang.org"

 Program:
 void main () {
 auto FFs =  ["C:\\Temp\\sapnas2\\BACKUP", 
 "C:\\Temp\\sapnas2\\EXPORT"];
 Array!(Tuple!(string, SysTime)) Result;
 foreach(d; FFs[]) {
 auto dFiles = Array!(Tuple!(string, SysTime))(dirEntries(d, 
 SpanMode.shallow).filter!(a => a.isDir).map!(a => tuple(a.name, 
 a.timeCreated)))[]
 	.sort!((a,b) => a[1] > b[1]);
 writeln(dFiles[]);
 } }

 Error:
 Message.d(14): Error: function 
 Message.main.SortedRange!(RangeT!(Array!(Tuple!(string, 
 SysTime))), __lambda3).SortedRange.opSlice (uint a, uint b) is 
 not callab
 le using argument types ()
 Failed: ["dmd", "-v", "-o-", "Message.d", "-I."]

 From,
 Vino.B


Hi All,

  Was able to find a solution and it is working as expected

import std.algorithm: filter, map, sort, each;
import std.container.array;
import std.file: SpanMode, dirEntries, isDir ;
import std.stdio: writeln,writefln;
import std.typecons: Tuple, tuple;
import std.datetime.systime: SysTime;
import std.conv;
void main () {
auto FFs =  ["C:\\Temp\\BACKUP", "C:\\Temp\\EXPORT"];
Array!(Tuple!(string, SysTime)) Sorted;
foreach(d; FFs[]) {
auto dFiles = Array!(Tuple!(string, SysTime))(dirEntries(d, 
SpanMode.shallow).filter!(a => a.isDir).map!(a => tuple(a.name, 
a.timeCreated)));
foreach(i; dFiles[]){ Sorted ~= i; }
Sorted[].sort!((a,b) => a[1] > b[1]).each!(e => writefln!"%-63s 
%.20s"(e[0], e[1].to!string));
}
}

From,
Vino.B
Dec 13 2017