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[Stanislav Blinov]

On Wednesday, 3 June 2020 at 21:04:23 UTC, Steven Schveighoffer 
wrote:

>> A thread-safe writeln would be threadsafe_writeln. Or, 
>> alternatively there would be a writeln and a 
>> not_threadsafe_writeln. No reason to pay for something you're 
>> not using. And still neither implementation would call into C, 
>> the OS is right there.
>
> writeln writes to a FILE *, which is C. There's no way around 
> it. FILE * is buffered i/o, so going around it would mean odd 
> out-of-order output.

There's no way around writing to a FILE*? I... hope you didn't 
mean what you wrote, all things considered ;)

I know what Phobos' writeln does. But whatever, this is not the 
topic. Maybe in another thread at another time...