stdio performance in tango, stdlib, and perl

[Walter Bright]

Andrei Alexandrescu (See Website For Email) wrote:
> Walter Bright wrote:
>> Turning off sync is cheating - D's readln does syncing.
> 
> I don't know exactly what sync'ing does in C++, but probably it isn't 
> the locking that you are thinking of.

I think it means bringing the iostream I/O buffer in to sync with the 
stdio I/O buffer, i.e. you can mix printf and iostream output and it 
will appear in the same order the calls happen in the code.

D's readln is inherently synced in this manner.