• somebody (14/14) Dec 20 2016 I though D should have syntax similarities with C, but recently
• Madaz Hill (6/20) Dec 20 2016 Your code is like this:
• =?UTF-8?Q?Ali_=c3=87ehreli?= (12/24) Dec 20 2016 Yes, opposite.
• somebody (1/1) Dec 20 2016 Thanks for the explanation

somebody <some.body mail.com> writes:

I though D should have syntax similarities with C, but recently 
I've found that array indexing in D is different. Suppose we have 
a code:

import std.stdio;

void main ()
{
     wstring[6][2] strings;
     strings[2][0] = "test";
}


It fails to compile because of error:

"./main.d(6): Error: array index 2 is out of bounds strings[0 .. 
2]"

Why? There should be 6 rows and 2 columns, but it seems that it's 
the opposite. Am I misunderstood something or is it a bug?

Madaz Hill <mhmhmh mhmh.mh> writes:

On Tuesday, 20 December 2016 at 19:59:41 UTC, somebody wrote:
 I though D should have syntax similarities with C, but recently 
 I've found that array indexing in D is different. Suppose we 
 have a code:

 import std.stdio;

 void main ()
 {
     wstring[6][2] strings;
     strings[2][0] = "test";
 }


 It fails to compile because of error:

 "./main.d(6): Error: array index 2 is out of bounds strings[0 
 .. 2]"

 Why? There should be 6 rows and 2 columns, but it seems that 
 it's the opposite. Am I misunderstood something or is it a bug?

Your code is like this:

alias S = wstring[6];
S[2] strings;
strings[2] = "test";

You see your error now ?

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

On 12/20/2016 11:59 AM, somebody wrote:
 I though D should have syntax similarities with C, but recently I've
 found that array indexing in D is different. Suppose we have a code:

 import std.stdio;

 void main ()
 {
     wstring[6][2] strings;
     strings[2][0] = "test";
 }


 It fails to compile because of error:

 "./main.d(6): Error: array index 2 is out of bounds strings[0 .. 2]"

 Why? There should be 6 rows and 2 columns, but it seems that it's the
 opposite. Am I misunderstood something or is it a bug?

Yes, opposite.

C's array declaration mimics the way arrays are used in code: first row, 
then column. In D, array declarations are always "type followed by 
square brackets";

     int[N] arr;

Array of arrays follow the same consistent definition: first type, then 
the square brackets. So if we need an array of 6 elements where the type 
of elements is int[2], then we follow that description (space added for 
emphasis):

     int[2] [6] arr;

Ali

somebody <some.body mail.com> writes:

Thanks for the explanation