Re: macro for fir list?

On 30/03/2024 09:56, fir wrote:

>

yet other example
 //bytes container
   char* bytes = NULL; int bytes_size = 0;
   void bytes_add(char val) { (bytes=(char*)realloc(bytes,++bytes_size*sizeof(char)))[bytes_size-1]=val;  }
   void bytes_load(char* name)  {    FILE *f = fopen(name, "rb"); int c; while((c=getc(f))!=EOF) bytes_add(c);   fclose(f);  }

This is pretty inefficient. Loading an 8MB file this way takes 3 seconds, vs. 50ms to load it in one go.
Loading the same 90KB file 10,000 times took 120 seconds, vs. 0.8 seconds even using a scripting language.
80% of the inefficiency is growing the buffer one byte at a time. The other 20% is reading the file one byte at a time.