• Vino (41/41) Jan 04 2018 Hi All,
• =?UTF-8?Q?Ali_=c3=87ehreli?= (11/16) Jan 04 2018 read() returns a tuple of values of different types.
• Vino (6/23) Jan 05 2018 Hi Ali,
• thedeemon (5/7) Jan 05 2018 What exactly are you trying to do in Master()? The code seems
• Vino (34/41) Jan 05 2018 Hi,
• thedeemon (3/5) Jan 05 2018 Sorry, I'm asking what problem are you solving, what the program
• Vino (36/42) Jan 05 2018 Hi,
• Vino (17/61) Jan 05 2018 More Info:
• thedeemon (42/68) Jan 05 2018 Thank you for the explanation, this is a nice little task.
• thedeemon (13/18) Jan 05 2018 And since lines of the file are copied to heap anyway, it's
• thedeemon (2/4) Jan 05 2018 Sorry, I meant tuple of arrays, of course.
• Vino (13/17) Jan 05 2018 Hi Deemon,
• Vino (38/56) Jan 06 2018 Hi Deemon,
• thedeemon (33/45) Jan 06 2018 Here's a version with Array, it's very similar:
• Vino (5/16) Jan 07 2018 Hi Deemon,
• Vino (20/39) Jan 07 2018 Hi Deemon,
• thedeemon (3/5) Jan 07 2018 That's the part you can implement yourself. Just replace those
• Vino (11/16) Jan 07 2018 HI Deemon,
• thedeemon (4/7) Jan 07 2018 You've said before you need 6 different files, not some tables.
• Vino (32/39) Jan 07 2018 Hi Deemon,
• thedeemon (3/8) Jan 08 2018 So, you don't need row wise output.
• thedeemon (10/13) Jan 08 2018 Ah, sorry, now I think I get it.
• Vino (9/22) Jan 08 2018 HI Deemon,

Vino <vino.bheeman hotmail.com> writes:

Hi All,

  Request your help on the below error for the below program.

Error:
CReadCol.d(20): Error: variable i cannot be read at compile time
CReadCol.d(21): Error: variable i cannot be read at compile time
CReadCol.d(22): Error: variable i cannot be read at compile time


Program
import std.algorithm: joiner, sort, countUntil, uniq;
import std.container.array;
import std.csv: csvReader;
import std.stdio: File, writeln;
import std.typecons: Tuple, tuple;

auto read () {
Array!string Ucol1, Ucol2;
Array!int Ucol3;
int rSize;
auto file = 
File("C:\\Users\\bheev1\\Desktop\\Current\\Script\\Others\\ColRead.csv", "r");
foreach (record; 
file.byLineCopy.joiner("\n").csvReader!(Tuple!(string, string, 
int)))
{ Ucol1.insertBack(record[0]); Ucol2.insertBack(record[1]); 
Ucol3.insertBack(record[2]); rSize = record.length; }
return tuple(Ucol1, Ucol2, Ucol3, rSize);
}
/***********************************************************************************/
auto Master (int Size) {
Array!int Keycol;
for(int i = 0; i < Size; i++) {
typeof(read()[i]) Datacol;
Datacol.insertBack(sort(read[i].dup[]).uniq);
foreach(k; read[i]) { Keycol.insertBack(Datacol[].countUntil(k)); 
} }
return tuple (Datacol[], Keycol[]);
}

void main () {
int Size = read[3];
writeln(Master(Size));
}

From,
Vino.B

=?UTF-8?Q?Ali_=c3=87ehreli?= <acehreli yahoo.com> writes:

On 01/04/2018 08:51 AM, Vino wrote:

 auto read () {

[...]
 return tuple(Ucol1, Ucol2, Ucol3, rSize);
 }

read() returns a tuple of values of different types.

 for(int i = 0; i < Size; i++) {
 typeof(read()[i]) Datacol;

typeof is a compile-time expression but there cannot be a consistent 
result to that expression when i is not known at compile-time.

You might try using a 'static foreach' but this time Size is not a 
compile-time expression:

     static foreach(i; 0 .. Size) {
         typeof(read()[i]) Datacol;

Error: variable Size cannot be read at compile time

Ali

Vino <vino.bheeman hotmail.com> writes:

On Thursday, 4 January 2018 at 18:49:21 UTC, Ali Çehreli wrote:
 On 01/04/2018 08:51 AM, Vino wrote:

 auto read () {

 [...]
 return tuple(Ucol1, Ucol2, Ucol3, rSize);
 }

 read() returns a tuple of values of different types.

 for(int i = 0; i < Size; i++) {
 typeof(read()[i]) Datacol;

 typeof is a compile-time expression but there cannot be a 
 consistent result to that expression when i is not known at 
 compile-time.

 You might try using a 'static foreach' but this time Size is 
 not a compile-time expression:

     static foreach(i; 0 .. Size) {
         typeof(read()[i]) Datacol;

 Error: variable Size cannot be read at compile time

 Ali

Hi Ali,

   Thank you very much, can you suggest the best way around this 
issue.

From,
Vino.B

thedeemon <dlang thedeemon.com> writes:

On Friday, 5 January 2018 at 09:09:00 UTC, Vino wrote:
   Thank you very much, can you suggest the best way around this 
 issue.

What exactly are you trying to do in Master()? The code seems 
very broken. Each time you write read[i] is will call read() and 
read the whole file, you're going to read the file so many times 
in this code. I don't think that was the intent.

Vino <vino.bheeman hotmail.com> writes:

On Friday, 5 January 2018 at 12:10:33 UTC, thedeemon wrote:
 On Friday, 5 January 2018 at 09:09:00 UTC, Vino wrote:
   Thank you very much, can you suggest the best way around 
 this issue.

 What exactly are you trying to do in Master()? The code seems 
 very broken. Each time you write read[i] is will call read() 
 and read the whole file, you're going to read the file so many 
 times in this code. I don't think that was the intent.

Hi,

   Please find the full code, the below code will read a 
ColRead.csv file which contains the below entry

Miller	America	23
John	India	42
Baker	Austrilia	21
Zsuwalski	Japan	45
Baker	America	45
Miller	India	23


import std.algorithm: countUntil, joiner, sort, uniq;
import std.container.array;
import std.csv: csvReader;
import std.stdio: File, writeln;
import std.typecons: Tuple, tuple;

auto read (){
Array!string Ucol1, Ucol2; Array!int Ucol3; int rSize;
auto file = 
File("C:\\Users\\bheev1\\Desktop\\Current\\Script\\Others\\ColRead.csv", "r");
foreach (record; 
file.byLineCopy.joiner("\n").csvReader!(Tuple!(string, string, 
int)))
{ Ucol1.insertBack(record[0]); Ucol2.insertBack(record[1]); 
Ucol3.insertBack(record[2]); rSize = record.length; }
return tuple(Ucol1, Ucol2, Ucol3, rSize);
}

void main () {
Array!int Key;
int Size = read[3];
static foreach(i; 0 .. Size) {
typeof(read()[i]) Data;
Data.insertBack(sort(read[0].dup[]).uniq);
foreach(i; read[i]) { Key.insertBack(Data[].countUntil(i)); } }
  }

thedeemon <dlang thedeemon.com> writes:

On Friday, 5 January 2018 at 12:40:41 UTC, Vino wrote:
 What exactly are you trying to do in Master()?

   Please find the full code,

Sorry, I'm asking what problem are you solving, what the program 
should do, what is its idea. Not what code you have written.

Vino <vino.bheeman hotmail.com> writes:

On Friday, 5 January 2018 at 12:47:39 UTC, thedeemon wrote:
 On Friday, 5 January 2018 at 12:40:41 UTC, Vino wrote:
 What exactly are you trying to do in Master()?

   Please find the full code,

 Sorry, I'm asking what problem are you solving, what the 
 program should do, what is its idea. Not what code you have 
 written.

Hi,

I am trying to implement data dictionary compression, and below 
is the function of the program,

Function read:
This function read a csv file which contains 3 column as and 
stores the value of each column in an array Col1: Array1 (Ucol1), 
Col2: Array2 (Ucol2), Col3: Array3(Ucol3) and returns the data.

CSV file content:
Miller	America	23
John	India	42
Baker	Australia	21
Zsuwalski	Japan	45
Baker	America	45
Miller	India	23

Function Main
This function receives the data from the function read.
Creates an array based of the function return type – ( 
typeof(read()[i]) Data );
Sorts the data and removes the duplicates and stores the data in 
the above array.
Then using “countUntil” function we can accomplish the data 
dictionary compression.

Result
The above file will be stored as
Data File:
Data-Col1.txt which contains [Baker, John, Miller, Zsuwalski]
Data-Col2.txt which contains [America, Australia , India, Japan]
Data-Col3.txt which contains [21, 23, 42, 45]

Index File:
Index-Col1.txt which contains [2, 1, 0, 3, 0, 2]
Index -Col2.txt which contains [0, 2, 1, 3, 0, 2]
Index -Col3.txt which contains [1, 2, 0, 3, 3, 1]

The program works for a single column.

From,
Vino.B

Vino <vino.bheeman hotmail.com> writes:

On Friday, 5 January 2018 at 13:09:25 UTC, Vino wrote:
 On Friday, 5 January 2018 at 12:47:39 UTC, thedeemon wrote:
 On Friday, 5 January 2018 at 12:40:41 UTC, Vino wrote:
 What exactly are you trying to do in Master()?

   Please find the full code,

 Sorry, I'm asking what problem are you solving, what the 
 program should do, what is its idea. Not what code you have 
 written.

 Hi,

 I am trying to implement data dictionary compression, and below 
 is the function of the program,

 Function read:
 This function read a csv file which contains 3 column as and 
 stores the value of each column in an array Col1: Array1 
 (Ucol1), Col2: Array2 (Ucol2), Col3: Array3(Ucol3) and returns 
 the data.

 CSV file content:
 Miller	America	23
 John	India	42
 Baker	Australia	21
 Zsuwalski	Japan	45
 Baker	America	45
 Miller	India	23

 Function Main
 This function receives the data from the function read.
 Creates an array based of the function return type – ( 
 typeof(read()[i]) Data );
 Sorts the data and removes the duplicates and stores the data 
 in the above array.
 Then using “countUntil” function we can accomplish the data 
 dictionary compression.

 Result
 The above file will be stored as
 Data File:
 Data-Col1.txt which contains [Baker, John, Miller, Zsuwalski]
 Data-Col2.txt which contains [America, Australia , India, Japan]
 Data-Col3.txt which contains [21, 23, 42, 45]

 Index File:
 Index-Col1.txt which contains [2, 1, 0, 3, 0, 2]
 Index -Col2.txt which contains [0, 2, 1, 3, 0, 2]
 Index -Col3.txt which contains [1, 2, 0, 3, 3, 1]

 The program works for a single column.

 From,
 Vino.B

More Info:

If we change the below line
static foreach(i; 0 .. 1)
Output: ["Baker", "John", "Miller", "Zsuwalski"][2, 1, 0, 3, 0, 2]

static foreach(i; 1 .. 2)
["America", "Austrilia", "India", "Japan"][0, 2, 1, 3, 0, 2])

static foreach(i; 2 .. 3)
[21, 23, 42, 45][1, 2, 0, 3, 3, 1]

Instead of manually chaning the values I used the variable Size 
where the value of the Size if from the read function (read[3] ) 
where read[3] is rSize = record.length;

If I use the variable Size as static foreach(i; 0 .. Size) I am 
getting an error : “Error: variable Size cannot be read at 
compile time”.

From,
Vino.B

thedeemon <dlang thedeemon.com> writes:

On Friday, 5 January 2018 at 13:09:25 UTC, Vino wrote:
 Sorry, I'm asking what problem are you solving, what the 
 program should do, what is its idea. Not what code you have 
 written.

 Hi,

 I am trying to implement data dictionary compression, and below 
 is the function of the program,

 Function read:
 This function read a csv file which contains 3 column as and 
 stores the value of each column in an array Col1: Array1 
 (Ucol1), Col2: Array2 (Ucol2), Col3: Array3(Ucol3) and returns 
 the data.

 CSV file content:
 Miller	America	23
 John	India	42
 Baker	Australia	21
 Zsuwalski	Japan	45
 Baker	America	45
 Miller	India	23

 Function Main
 This function receives the data from the function read.
 Creates an array based of the function return type – ( 
 typeof(read()[i]) Data );
 Sorts the data and removes the duplicates and stores the data 
 in the above array.
 Then using “countUntil” function we can accomplish the data 
 dictionary compression.

Thank you for the explanation, this is a nice little task.
Here's my version of solution. I've used ordinary arrays instead 
of std.container.array, since the data itself is in GC'ed heap 
anyway.
I used csv file separated by tabs, so told csvReader to use '\t' 
for delimiter.

import std.algorithm: countUntil, joiner, sort, uniq, map;
import std.csv: csvReader;
import std.stdio: File, writeln;
import std.typecons: Tuple, tuple;
import std.meta;
import std.array : array;

//we know types of columns, so let's state them once
alias ColumnTypes = AliasSeq!(string, string, int);
alias Arr(T) = T[];

auto readData() {
     auto file = File("data.csv", "r");
     Tuple!( staticMap!(Arr, ColumnTypes) ) res; // tuple of arrays
     foreach (record; 
file.byLineCopy.joiner("\n").csvReader!(Tuple!ColumnTypes)('\t'))
         foreach(i, T; ColumnTypes)
             res[i] ~= record[i]; // here res[i] can have 
different types
     return res;
}

//compress a single column
auto compress(T)(T[] col) {
     T[] vals = sort(col.dup[]).uniq.array;
     auto ks = col.map!(v => col.countUntil(v)).array;
     return tuple(vals, ks);
}

void main() {
     auto columns = readData();
     foreach(i, ColT; ColumnTypes) {
         // here the data can have different type for different i
         auto vk = compress(columns[i]);
         writeln(vk[0][]); //output data,   you can write files 
here
         writeln(vk[1][]); //output indices
     }
}

thedeemon <dlang thedeemon.com> writes:

On Friday, 5 January 2018 at 17:50:13 UTC, thedeemon wrote:
 Here's my version of solution. I've used ordinary arrays 
 instead of std.container.array, since the data itself is in 
 GC'ed heap anyway.
 I used csv file separated by tabs, so told csvReader to use 
 '\t' for delimiter.

And since lines of the file are copied to heap anyway, it's 
easier to skip unnecessary line splitting and joining and do the 
reading simpler:

import std.file : readText;

auto readData(string fname) {
     Tuple!( staticMap!(Arr, ColumnTypes) ) res; // array of tuples
     foreach (record; 
fname.readText.csvReader!(Tuple!ColumnTypes)('\t'))
         foreach(i, T; ColumnTypes)
             res[i] ~= record[i];
     return res;
}

thedeemon <dlang thedeemon.com> writes:

On Friday, 5 January 2018 at 17:59:32 UTC, thedeemon wrote:
     Tuple!( staticMap!(Arr, ColumnTypes) ) res; // array of 
 tuples

Sorry, I meant tuple of arrays, of course.

Vino <vino.bheeman hotmail.com> writes:

On Friday, 5 January 2018 at 18:00:34 UTC, thedeemon wrote:
 On Friday, 5 January 2018 at 17:59:32 UTC, thedeemon wrote:
     Tuple!( staticMap!(Arr, ColumnTypes) ) res; // array of 
 tuples

 Sorry, I meant tuple of arrays, of course.

Hi Deemon,

  Thank you very much, I tested your code, initially the code did 
not produce the expected output, and found an issue in the the 
key line of code as below, after updating the output was as 
expected. Can you please let me know how to change the array from 
standard array to container array.

auto ks = col.map!(v => col.countUntil(v)).array; // Your 
code(col.countUntil)
auto ks = col.map!(v => vals.countUntil(v)).array; // Changed 
code(vals.countUntil)

From,
Vino.B

Vino <vino.bheeman hotmail.com> writes:

On Saturday, 6 January 2018 at 06:47:33 UTC, Vino wrote:
 On Friday, 5 January 2018 at 18:00:34 UTC, thedeemon wrote:
 On Friday, 5 January 2018 at 17:59:32 UTC, thedeemon wrote:
     Tuple!( staticMap!(Arr, ColumnTypes) ) res; // array of 
 tuples

 Sorry, I meant tuple of arrays, of course.

 Hi Deemon,

  Thank you very much, I tested your code, initially the code 
 did not produce the expected output, and found an issue in the 
 the key line of code as below, after updating the output was as 
 expected. Can you please let me know how to change the array 
 from standard array to container array.

 auto ks = col.map!(v => col.countUntil(v)).array; // Your 
 code(col.countUntil)
 auto ks = col.map!(v => vals.countUntil(v)).array; // Changed 
 code(vals.countUntil)

 From,
 Vino.B

Hi Deemon,

Was able to convert 50% of the code to container array and facing 
some issue

import std.algorithm: countUntil, joiner, sort, uniq, map;
import std.csv: csvReader;
import std.stdio: File, writeln;
import std.typecons: Tuple, tuple;
import std.meta: AliasSeq;
import std.container.array;

alias ColumnTypes = AliasSeq!(string, string, int);
alias Arr(T) = Array!T;

auto readData() {
auto file = 
File("C:\\Users\\bheev1\\Desktop\\Current\\Script\\Others\\TColRead.csv", "r");
Arr!(Tuple!ColumnTypes) res;
foreach (record; 
file.byLineCopy.joiner("\n").csvReader!(Tuple!ColumnTypes))
	{ res.insertBack(record); }	
return tuple(res[]);   // replace this line with writeln(res[]); 
gives the expected output
}

auto compress(T)(Array!T col) {
	Arr!int ks; Array!T vals;
     vals.insertBack(sort(col.dup[]).uniq);
	ks.insertBack(col.map!(v => vals.countUntil(v)));
	return tuple(vals, ks);
}

void main() {
    auto columns = readData();
    foreach(i, ColT; ColumnTypes) {               //Facing some 
issue at this point
		auto vk = compress(columns[i]);
		writeln(vk[0][], vk[1][]);
	}
}


From,
Vino.B

thedeemon <dlang thedeemon.com> writes:

On Saturday, 6 January 2018 at 06:47:33 UTC, Vino wrote:
 On Friday, 5 January 2018 at 18:00:34 UTC, thedeemon wrote:
 On Friday, 5 January 2018 at 17:59:32 UTC, thedeemon wrote:
     Tuple!( staticMap!(Arr, ColumnTypes) ) res; // array of 
 tuples

 Sorry, I meant tuple of arrays, of course.

 Hi Deemon,

  Thank you very much, I tested your code, initially the code 
 did not produce the expected output, and found an issue in the 
 the key line of code as below, after updating the output was as 
 expected. Can you please let me know how to change the array 
 from standard array to container array.

Here's a version with Array, it's very similar:

import std.algorithm: countUntil, joiner, sort, uniq, map;
import std.csv: csvReader;
import std.stdio: File, writeln;
import std.typecons: Tuple, tuple;
import std.meta;
import std.file : readText;
import std.container.array;

alias ColumnTypes = AliasSeq!(string, string, int);

auto readData(string fname) { // returns tuple of Arrays
     Tuple!( staticMap!(Array, ColumnTypes) ) res;
     foreach (record; 
fname.readText.csvReader!(Tuple!ColumnTypes)('\t'))
         foreach(i, T; ColumnTypes)
             res[i].insert(record[i]);
     return res;
}

auto compress(T)(ref Array!T col) {
     auto vals = Array!T( sort(col.dup[]).uniq );
     auto ks = Array!ptrdiff_t( col[].map!(v => 
vals[].countUntil(v)) );
     return tuple(vals, ks);
}

void main() {
     auto columns = readData("data.csv");
     foreach(i, ColT; ColumnTypes) {
         auto vk = compress(columns[i]);
         writeln(vk[0][]); //output data,   you can write files 
here
         writeln(vk[1][]); //output indices
     }
}

Vino <vino.bheeman hotmail.com> writes:

On Saturday, 6 January 2018 at 15:32:14 UTC, thedeemon wrote:
 On Saturday, 6 January 2018 at 06:47:33 UTC, Vino wrote:
 [...]

 Here's a version with Array, it's very similar:

 import std.algorithm: countUntil, joiner, sort, uniq, map;
 import std.csv: csvReader;
 import std.stdio: File, writeln;
 import std.typecons: Tuple, tuple;
 import std.meta;
 import std.file : readText;
 import std.container.array;

 [...]

Hi Deemon,

  Thank you very much, moving to second phase.

From,
Vino.B

Vino <vino.bheeman hotmail.com> writes:

On Sunday, 7 January 2018 at 12:09:32 UTC, Vino wrote:
 On Saturday, 6 January 2018 at 15:32:14 UTC, thedeemon wrote:
 On Saturday, 6 January 2018 at 06:47:33 UTC, Vino wrote:
 [...]

 Here's a version with Array, it's very similar:

 import std.algorithm: countUntil, joiner, sort, uniq, map;
 import std.csv: csvReader;
 import std.stdio: File, writeln;
 import std.typecons: Tuple, tuple;
 import std.meta;
 import std.file : readText;
 import std.container.array;

 [...]

 Hi Deemon,

  Thank you very much, moving to second phase.

 From,
 Vino.B

Hi Deemon,

  Just noticed that the output writes the data and key as 2 values 
, but the requirnment is to write to six files, e.g

Data File 1
["Baker", "John", "Johnson", "Jones", "Miller", "Millers", 
"Millman", "Zsuwalski"]

Key File 1
[4, 1, 6, 7, 0, 4, 3, 4, 2, 1, 6, 5]

Data File 2
["America", "Austrilia", "Canada", "Chile", "China", "India", 
"Japan", "Netherlands"]

Key File 2
[0, 5, 1, 6, 4, 2, 1, 5, 7, 0, 4, 3]

Data File 3
[18, 21, 23, 42, 45]

Key File 3
[2, 3, 1, 4, 4, 2, 0, 1, 3, 3, 3, 2]

From,
Vino.B

thedeemon <dlang thedeemon.com> writes:

On Sunday, 7 January 2018 at 12:59:10 UTC, Vino wrote:
  Just noticed that the output writes the data and key as 2 
 values , but the requirnment is to write to six files, e.g

That's the part you can implement yourself. Just replace those 
writelns with writing to corresponding files.

Vino <vino.bheeman hotmail.com> writes:

On Sunday, 7 January 2018 at 17:23:20 UTC, thedeemon wrote:
 On Sunday, 7 January 2018 at 12:59:10 UTC, Vino wrote:
  Just noticed that the output writes the data and key as 2 
 values , but the requirnment is to write to six files, e.g

 That's the part you can implement yourself. Just replace those 
 writelns with writing to corresponding files.

HI Deemon,

  I tried to manipulate the writeln's as below but the output is 
not as expected as it prints the data in row wise, where as we 
need it in column wise.

writeln(vk[0][0]);

Baker
America
18

From,
Vino.B

thedeemon <dlang thedeemon.com> writes:

On Sunday, 7 January 2018 at 17:30:26 UTC, Vino wrote:

  I tried to manipulate the writeln's as below but the output is 
 not as expected as it prints the data in row wise, where as we 
 need it in column wise.

You've said before you need 6 different files, not some tables.
Also, after the "compression" data columns will have different 
length. How exactly do you want to combine them into a table?

Vino <vino.bheeman hotmail.com> writes:

On Monday, 8 January 2018 at 05:38:44 UTC, thedeemon wrote:
 On Sunday, 7 January 2018 at 17:30:26 UTC, Vino wrote:

  I tried to manipulate the writeln's as below but the output 
 is not as expected as it prints the data in row wise, where as 
 we need it in column wise.

 You've said before you need 6 different files, not some tables.
 Also, after the "compression" data columns will have different 
 length. How exactly do you want to combine them into a table?

Hi Deemon,

   The output required is like this,

(1) Read a table data form the csv file

John, America,23
John, India, 22
Astro, Canada, 21

2) Sort and remove the duplicates from each column by column

Take a copy of each column and sort and remove the duplicates 
(col.dup) and store the resultant data of each column in seprate 
files like below.

Column 1 ( Store the data to text Datafille1)
Astro
John

Column 2 ( Store the data to text Datafille2)
America
Canada
India

Column 3 ( Store the data to text Datafille3)
21
22
23

Using the function countUntil find the keys for each of the 
column and store the result of each column in another files.

Key for column to text Keyfille1
original column1[].map!(v => Sorted Column1[].countUntil(v)) );

Key for column to text Keyfille2
original column2[].map!(v => Sorted Column2[].countUntil(v)) );

Key for column to text Keyfille3
original column3[].map!(v => Sorted Column3[].countUntil(v)) );


From,
Vino.B

thedeemon <dlang thedeemon.com> writes:

On Monday, 8 January 2018 at 07:37:31 UTC, Vino wrote:
  I tried to manipulate the writeln's as below but the output 
 is not as expected as it prints the data in row wise, where 
 as we need it in column wise.



...
 Using the function countUntil find the keys for each of the 
 column and store the result of each column in another files.

So, you don't need row wise output.

thedeemon <dlang thedeemon.com> writes:

On Monday, 8 January 2018 at 07:37:31 UTC, Vino wrote:
  I tried to manipulate the writeln's as below but the output 
 is not as expected as it prints the data in row wise, where 
 as we need it in column wise.



Ah, sorry, now I think I get it.
Your problem is you get output like ["a","b","c"] and instead you 
want
a
b
c

right?

Well, I think you know how to write a loop and output one item 
per line inside this loop.

Vino <vino.bheeman hotmail.com> writes:

On Monday, 8 January 2018 at 08:22:21 UTC, thedeemon wrote:
 On Monday, 8 January 2018 at 07:37:31 UTC, Vino wrote:
  I tried to manipulate the writeln's as below but the output 
 is not as expected as it prints the data in row wise, where 
 as we need it in column wise.



 Ah, sorry, now I think I get it.
 Your problem is you get output like ["a","b","c"] and instead 
 you want
 a
 b
 c

 right?

 Well, I think you know how to write a loop and output one item 
 per line inside this loop.

HI Deemon,

   Yes the output is required as below, and trying the same, but 
still no luck.
a
b
c

From,
Vino.B