Re: Cast a 2d static array to a 1d static array. T[s][r] -> T[s*r]

[TheFlyingFiddle via Digitalmars-d-learn]

On Tuesday, 27 February 2018 at 22:17:25 UTC, Jonathan wrote:

On Tuesday, 27 February 2018 at 22:13:05 UTC, Jonathan wrote:
Is it possible to cast a 2d static length array to a 1d static 
length array?


E.g.
int[2][2] a = [[1,2],[3,4]];
int[4]b = cast(int[4])a;

Is not the byte data in memory exactly the same?


*( [pos,size].ptr .cst!(void*) .cst!(int[4]*) )
(using dub `cst` library) or
*( cast(int[4]*)(cast(void*)([pos,size].ptr)) )

Okay, this works but is this the best way?!


This should work
int[4] b = *(cast(int[4]*)a.ptr);

Re: Cast a 2d static array to a 1d static array. T[s][r] -> T[s*r]

[Jonathan via Digitalmars-d-learn]

On Tuesday, 27 February 2018 at 22:13:05 UTC, Jonathan wrote:
Is it possible to cast a 2d static length array to a 1d static 
length array?


E.g.
int[2][2] a = [[1,2],[3,4]];
int[4]b = cast(int[4])a;

Is not the byte data in memory exactly the same?


*( [pos,size].ptr .cst!(void*) .cst!(int[4]*) )
(using dub `cst` library) or
*( cast(int[4]*)(cast(void*)([pos,size].ptr)) )

Okay, this works but is this the best way?!

Cast a 2d static array to a 1d static array. T[s][r] -> T[s*r]

[Jonathan via Digitalmars-d-learn]

Is it possible to cast a 2d static length array to a 1d static 
length array?


E.g.
int[2][2] a = [[1,2],[3,4]];
int[4]b = cast(int[4])a;

Is not the byte data in memory exactly the same?