std.stdio.writeln

[Adam D. Ruppe via Digitalmars-d-learn]

On Monday, 9 March 2015 at 14:38:41 UTC, Dennis Ritchie wrote:
> 	(1, 2, 3).writeln;	// prints 3

that's not an array, use [1,2,3] for that.

What you wrote is a parenthesis expression with comma expressions 
inside. The comma operator is a bit weird: it works like a 
semicolon, but in different contexts.

So 1,2,3, in this context, means "calculate 1, then calculate 2, 
then calculate 3, the result is the final one: 3". The 1 and 2 
are just discarded because their calculations don't save anything 
outside.