Re: can you initialize a array of POD structs?

[Chris Katko via Digitalmars-d-learn]

On Saturday, 18 June 2022 at 17:52:16 UTC, Adam D Ruppe wrote:

On Saturday, 18 June 2022 at 17:37:44 UTC, Chris Katko wrote:

D
struct pair { float x, y;}

pair p[] = [[0, 0], [255, 255], [25,-25]]; //nope



An array of pair is `pair[]`, keep the brackets with the type.

Then a struct literal is either:

pair(0, 0) // using constructor syntax

or in some select contexts (including this one):

{0, 0} // using named literal syntax


Therefore:

pair[] p = [{0, 0}, {255, 255}, {25,-25}];

compiles here.


Thanks!!

One extra caveat for anyone who googles this. You can't use {0, 
0} notation if the struct has constructors. Which make sense 
since you don't want people accidentally bypassing a constructor 
if it exists.

Re: can you initialize a array of POD structs?

[Adam D Ruppe via Digitalmars-d-learn]

On Saturday, 18 June 2022 at 17:37:44 UTC, Chris Katko wrote:

D
struct pair { float x, y;}

pair p[] = [[0, 0], [255, 255], [25,-25]]; //nope



An array of pair is `pair[]`, keep the brackets with the type.

Then a struct literal is either:

pair(0, 0) // using constructor syntax

or in some select contexts (including this one):

{0, 0} // using named literal syntax


Therefore:

pair[] p = [{0, 0}, {255, 255}, {25,-25}];

compiles here.

can you initialize a array of POD structs?

[Chris Katko via Digitalmars-d-learn]

D
struct pair { float x, y;}

pair p[] = [[0, 0], [255, 255], [25,-25]]; //nope