• jwatson-CO-edu (10/10) Nov 30 2022 Is there a way to write a single statement that creates a void
• Adam D Ruppe (9/11) Nov 30 2022 void* f = [1.0f, 1.0f, 1.0f].ptr;
• jwatson-CO-edu (9/16) Nov 30 2022 Thank you, that was just the magic I needed!
• =?UTF-8?Q?Ali_=c3=87ehreli?= (14/24) Nov 30 2022 Functions are syntax sugar. :)
• =?UTF-8?Q?Ali_=c3=87ehreli?= (10/11) Nov 30 2022 And I remembered std.array.staticArray. One its overloads should be usef...

jwatson-CO-edu <real.name colorado.edu> writes:

Is there a way to write a single statement that creates a void 
pointer that points to an initialized float array?  See below:
```d
float* arr = cast(float*) new float[4];
arr[0] = 0.1;
arr[1] = 0.1;
arr[2] = 0.1;
arr[3] = 0.1;
void* value = cast(void*) arr;
```

Adam D Ruppe <destructionator gmail.com> writes:

On Thursday, 1 December 2022 at 00:39:21 UTC, jwatson-CO-edu 
wrote:
 Is there a way to write a single statement that creates a void 
 pointer that points to an initialized float array?

         void* f = [1.0f, 1.0f, 1.0f].ptr;

Though I'd recommend keeping it typed as float[] until the last 
possible moment. If you are passing it a function, remmeber 
pointers convert to void* automatically, so you can do like:

float[] f = [1,1,1];

some_function_taking_void(f.ptr);

and it just works.

jwatson-CO-edu <real.name colorado.edu> writes:

On Thursday, 1 December 2022 at 00:47:18 UTC, Adam D Ruppe wrote:
 On Thursday, 1 December 2022 at 00:39:21 UTC, jwatson-CO-edu 
 wrote:
 Is there a way to write a single statement that creates a void 
 pointer that points to an initialized float array?


 float[] f = [1,1,1];

 some_function_taking_void(f.ptr);

 and it just works.

Thank you, that was just the magic I needed!

```d
float[4] arr = [0.1f, 0.1f, 0.1f, 1.0f]; // Init array with values

SetShaderValue(
     shader, ambientLoc, arr.ptr, 
ShaderUniformDataType.SHADER_UNIFORM_VEC4
); //                   ^^^^^^^---void* here
```

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

On 11/30/22 16:39, jwatson-CO-edu wrote:
 Is there a way to write a single statement that creates a void pointer 
 that points to an initialized float array?  See below:
 ```d
 float* arr = cast(float*) new float[4];
 arr[0] = 0.1;
 arr[1] = 0.1;
 arr[2] = 0.1;
 arr[3] = 0.1;
 void* value = cast(void*) arr;
 ```

Functions are syntax sugar. :)

import std;

void* inittedArray(T)(T value, size_t count) {
     auto arr = new T[count];
     arr[] = value;
     return arr.ptr;
}

void main() {
     auto v = inittedArray(0.1f, 5);

     // or something a little crazy:
     auto v2 = 0.1f.repeat(5).array.ptr.to!(void*);
}

Ali

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

On 11/30/22 16:48, Ali Çehreli wrote:

 Functions are syntax sugar. :)

And I remembered std.array.staticArray. One its overloads should be useful:

import std;

void main() {
     auto v3 = staticArray!(0.1f.repeat(5));
     auto v4 = staticArray!5(0.1f.repeat);

     writeln(v3);
     writeln(v4);
}

Ali