• kerdemdemir (29/29) May 30 2015 I want to append a 2D array to my 3D array. I expect it should be
• Rikki Cattermole (7/36) May 30 2015 stackoverflow isn't normally looked at by those in the D community.
• kerdemdemir (3/7) May 30 2015 Thanks a lot replacing the line above with
• Adam D. Ruppe (4/8) May 30 2015 I like it there, SO is a bit easier to search for the wider

"kerdemdemir" <kerdemdemir hotmail.com> writes:

I want to append a 2D array to my 3D array. I expect it should be 
same as int[] arr; arr ~= 3;

void readInput()
{
     char[][][] candidate;
     char[] buff;
     size_t counter = 0;
     while (  stdin.readln(buff) )
     {
         char[][] line = buff.chomp().split();
         writeln(line);

         candidate ~= line;
         writeln(candidate);
         if (++counter > 1 ) break;
     }
}

And I send the inputs below

201212?4 64
20121235 93
I expect a output like

[["201212?4", "64"], ["20121235", "93"]]
But instead I see

[["20121235", "93"], ["20121235", "93"]]

In short :
=~ replaces all the elements in the array with the last added. 
Where am I doing wrong? How can I meet my expectation?


By the way I am posting the same question to stackoverflow at the 
same time. Does sending questions to stackoverflow as well as 
here not desirable for D community? If so I will just write here.

Rikki Cattermole <alphaglosined gmail.com> writes:

On 31/05/2015 12:41 a.m., kerdemdemir wrote:
 I want to append a 2D array to my 3D array. I expect it should be same
 as int[] arr; arr ~= 3;

 void readInput()
 {
      char[][][] candidate;
      char[] buff;
      size_t counter = 0;
      while (  stdin.readln(buff) )
      {
          char[][] line = buff.chomp().split();
          writeln(line);

          candidate ~= line;
          writeln(candidate);
          if (++counter > 1 ) break;
      }
 }

 And I send the inputs below

 201212?4 64
 20121235 93
 I expect a output like

 [["201212?4", "64"], ["20121235", "93"]]
 But instead I see

 [["20121235", "93"], ["20121235", "93"]]

 In short :
 =~ replaces all the elements in the array with the last added. Where am
 I doing wrong? How can I meet my expectation?


 By the way I am posting the same question to stackoverflow at the same
 time. Does sending questions to stackoverflow as well as here not
 desirable for D community? If so I will just write here.

stackoverflow isn't normally looked at by those in the D community.

In your case its pretty simple. The buffer is being reused. So same 
memory being added multiple times to the candidate.
Just slap on a .dup when adding it.

It'll duplicate the contents in new memory so it won't be assigned on 
top of.

"kerdemdemir" <kerdemdemir hotmail.com> writes:

 In your case its pretty simple. The buffer is being reused. So 
 same memory being added multiple times to the candidate.
 Just slap on a .dup when adding it.

         candidate ~= line;



Thanks a lot replacing the line above with

candidate ~= [line[0].dup, line[1].dup];

My problem is solved .

"Adam D. Ruppe" <destructionator gmail.com> writes:

On Saturday, 30 May 2015 at 12:41:42 UTC, kerdemdemir wrote:
 By the way I am posting the same question to stackoverflow at 
 the same time. Does sending questions to stackoverflow as well 
 as here not desirable for D community? If so I will just write 
 here.

I like it there, SO is a bit easier to search for the wider 
userbase and I tend to answer there quickly if I'm online at the 
time.