A silly question about perl programming

[vahidkh6222]

Hello,

I need to undersrtand a piece of code written in perl language.
But I am stucked in the first line:

$| = 1;

What does this mean? is $| a variable initialised to 1? If yes, then why do we use this weird symbol as its name?!

thanks in advance

 

[mrflibble]

That means you enable autoflush. So any output to stdout gets output immediately, instead of some buffering.