Re: Can functions add properties?

[Mike Parker]

On Friday, 23 November 2012 at 14:08:05 UTC, Jun wrote:
I found some codes write
toStringz(myString)

as

mystring.toStringz

So I tested this code myself and it worked.

int pow2(int i)
{
    return i*i;
}
int myint = 5;
int otherint = myint.pow2;
assert(otherint == 25);


FYI, you could even do this:

int otherint = 5.pow2;



I've never seen any documentation about this behaviour. I think 
it's a good feature, but I'm a bit confused.


It's called Universal Function Call Syntax (UFCS). The compiler 
essentially rewrites something.function to function(something), 
unless "something" is a struct or class with a method named 
"function", in which case it calls the method instead.