What do you think about using Chat GPT to create functions in D?

[Ferhat Kurtulmuş]

On Monday, 3 April 2023 at 23:38:52 UTC, Marcone wrote:
> What do you think about using Chat GPT to create functions in 
> D? I asked Chat-GPT to create a function in D that was similar 
> to the rsplit() function in Python. It returned this code to me:
>
>
> import std.algorithm;
> import std.array;
> import std.string;
>
> string[] rsplit(string input, string separator, size_t maxsplit 
> = size_t.max) {
>     auto splitter = splitter(input, separator, 
> SplitterFlag.all);
>     auto results = splitter.array;
>     if (maxsplit < results.length - 1)
>         results = results[results.length - maxsplit - 1 .. $];
>     return results;
> }

Recently, it helped me figure out an OpenGL task using d.

     This is the code it suggests after I provide some details to 
it about the case and the error I get:
     ```d
     Slice!(RCI!ubyte, 3LU, Contiguous) plot2imslice() @nogc 
nothrow
     {
         import mir.rc;

         Slice!(RCI!ubyte, 3LU, Contiguous) imgslice = 
rcslice!ubyte([height, width, 3], 0);

         glfwMakeContextCurrent(_glfwWindow);

         // create and bind framebuffer
         GLuint fbo;
         glGenFramebuffers(1, &fbo);
         glBindFramebuffer(GL_FRAMEBUFFER, fbo);

         // create and bind texture
         GLuint texture;
         glGenTextures(1, &texture);
         glBindTexture(GL_TEXTURE_2D, texture);
         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, 
GL_RGB, GL_UNSIGNED_BYTE, null);
         glFramebufferTexture2D(GL_FRAMEBUFFER, 
GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);

         // render scene to framebuffer
         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
         // render your scene here

         // read pixel data from framebuffer
         glReadPixels(0, 0, width, height, GL_RGB, 
GL_UNSIGNED_BYTE, imgslice.ptr);

         // flip image vertically
         for (size_t y = 0; y < height / 2; y++) {
             for (size_t x = 0; x < width; x++) {
                 // swap rows
                 swap(imgslice[y][x], imgslice[height - y - 1][x]);
             }
         }

         // unbind framebuffer and cleanup
         glBindFramebuffer(GL_FRAMEBUFFER, 0);
         glDeleteTextures(1, &texture);
         glDeleteFramebuffers(1, &fbo);

         return imgslice;
     }
     ```

     And this is the code after required modifications:
     ```d
     auto plot2imslice() @nogc nothrow
         {
             import mir.rc;

             Slice!(RCI!ubyte, 3LU, Contiguous) imgslice = 
rcslice!ubyte([height, width, 3], 0);

             glfwMakeContextCurrent(_glfwWindow);

             // create and bind framebuffer
             GLuint fbo;
             glGenFramebuffers(1, &fbo);
             glBindFramebuffer(GL_FRAMEBUFFER, fbo);

             // create and bind texture
             GLuint texture;
             glGenTextures(1, &texture);
             glBindTexture(GL_TEXTURE_2D, texture);
             glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 
0, GL_RGB, GL_UNSIGNED_BYTE, null);
             glFramebufferTexture2D(GL_FRAMEBUFFER, 
GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);

             // render scene to framebuffer
             glBindFramebuffer(GL_FRAMEBUFFER, fbo);

             // render scene here
             render();

             // read pixel data from framebuffer
             glReadPixels(0, 0, width, height, GL_RGB, 
GL_UNSIGNED_BYTE, imgslice.ptr);

             import mir.utility : swap;
             // flip image vertically to correct generated image
             foreach (y; 0..height / 2) {
                 each!swap(imgslice[y], imgslice[height - y - 1]);
             }
             // unbind framebuffer and cleanup
             glBindFramebuffer(GL_FRAMEBUFFER, 0);
             glDeleteTextures(1, &texture);
             glDeleteFramebuffers(1, &fbo);

             return imgslice;
         }
     ```

This comment of chatGPT saved the day :) // render your scene here