Did somebody change the automatic stdout.flush behavior?

[Ali Çehreli]

On 2/16/22 23:19, Paulo Pinto wrote:

 > I bet you are mixing it up with connecting FILE streams to iostreams.
 >
 > https://en.cppreference.com/w/cpp/io/ios_base/sync_with_stdio

Thank you. That must be it.

Regardless whether the automatic flush is standard or not, it is indeed 
the case at least in a terminal. When I run the following program 
without version=input (as commented out below), I see the output in 
waves of 1024 characters. (The first wave appears after about 3 seconds.)

However, when I run it with version=input, I see that the output is 
automatically flushed before the input:

import std.stdio;
import core.thread;

// version = input;
enum inputPeriod = 10;

void main() {
   foreach (i; 1 .. 10_000) {
     Thread.sleep(10.msecs);
     write(' ', i);

     version (input) {
       if (i % inputPeriod == 0) {
         write("Enter a char: ");
         char c;
         readf(" %s", &c);
       }
     }
   }
}

It's perhaps the terminal, which me likes. No big deal...

Ali