Re: variable x cannot be read at compile time - how to get around this?

[Sergey via Digitalmars-d]

On Thursday, 13 November 2014 at 07:50:26 UTC, Brian Schott wrote:

On Thursday, 13 November 2014 at 07:08:19 UTC, Sergey wrote:

 Hello everyone!

I need to create a two-dimensional array in this way, for 
example:


What did you want the type of the array to be? string[10][10] 
or string[][]?


Oops, I did not see some of the details, how to work with 
string[][]. Right now I still try to understand. Sorry. Thanks 
for the push! :)

Re: variable x cannot be read at compile time - how to get around this?

[Brian Schott via Digitalmars-d]

On Thursday, 13 November 2014 at 07:08:19 UTC, Sergey wrote:

  Hello everyone!

I need to create a two-dimensional array in this way, for 
example:


What did you want the type of the array to be? string[10][10] 
or string[][]?

Re: variable x cannot be read at compile time - how to get around this?

[ketmar via Digitalmars-d]

On Thu, 13 Nov 2014 07:08:17 +
Sergey via Digitalmars-d digitalmars-d@puremagic.com wrote:

Hello everyone!
 
 I need to create a two-dimensional array in this way, for example:
 
 auto x = 10;
 auto y = 10;
 auto some_array = new string[x][y];
 variable x cannot be read at compile time
 
 I tried this:
 enum columns_array = 
 [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20];
 auto y = 10;
 int i = 1;
 auto some_array = new string[columns_array[i]][y];
 Error: columns_array is used as a type
 
 And yet, if I have a function:
 string[x][] some_function (some par) {
 auto x = 10;
 auto y = 10;
 auto some_array = new string[x][y];
 return some_array;
 }
 
 Thanks in advance.
you can't. use static constructor.


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Re: variable x cannot be read at compile time - how to get around this?

[Steven Schveighoffer via Digitalmars-d]

On 11/13/14 2:08 AM, Sergey wrote:

   Hello everyone!

I need to create a two-dimensional array in this way, for example:

auto x = 10;
auto y = 10;
auto some_array = new string[x][y];


auto some_array = new string[][](x, y);

Note, this creates 10 arrays of 10 elements all on the heap, and then a 
10 element array to point at them.


If you wanted an array of 10 *fixed sized* arrays (which is what your 
code was trying to do), then you need to have the first dimension be a 
compile-time constant such as a literal or an enum/immutable.


-Steve

Re: variable x cannot be read at compile time - how to get around this?

[Sergey via Digitalmars-d]

On Thursday, 13 November 2014 at 14:27:32 UTC, Steven 
Schveighoffer wrote:

On 11/13/14 2:08 AM, Sergey wrote:

  Hello everyone!

I need to create a two-dimensional array in this way, for 
example:


auto x = 10;
auto y = 10;
auto some_array = new string[x][y];


auto some_array = new string[][](x, y);

Note, this creates 10 arrays of 10 elements all on the heap, 
and then a 10 element array to point at them.


If you wanted an array of 10 *fixed sized* arrays (which is 
what your code was trying to do), then you need to have the 
first dimension be a compile-time constant such as a literal or 
an enum/immutable.


-Steve


Thanks!!!
This is what I need!
auto some_array = new string[][](x, y);

variable x cannot be read at compile time - how to get around this?

[Sergey via Digitalmars-d]

  Hello everyone!

I need to create a two-dimensional array in this way, for example:

auto x = 10;
auto y = 10;
auto some_array = new string[x][y];
variable x cannot be read at compile time

I tried this:
enum columns_array = 
[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20];

auto y = 10;
int i = 1;
auto some_array = new string[columns_array[i]][y];
Error: columns_array is used as a type

And yet, if I have a function:
string[x][] some_function (some par) {
   auto x = 10;
   auto y = 10;
   auto some_array = new string[x][y];
   return some_array;
   }

Thanks in advance.