On Monday, 24 December 2012 at 19:09:35 UTC, Jonathan M Davis
wrote:
On Monday, December 24, 2012 20:03:24 monarch_dodra wrote:
Hum... Indeed, it takes by ref *and* returns by ref. Passing in
to out a const ref is *the* smoking gun. Working with D has
gotten me used to functions that take by value and return by
value...
Snap. You got me.
It wouldn't matter if the function accepted its argument by
value...
- Jonathan M Davis
well, if the function took by value, and returned by ref, then it
would be just plain *wrong*, no conditions, so that did not even
cross my mind.
I *thought* min took by ref, and returned by value, hence my
confusion to the example. I'm legitimatly surprised to learn that
it works that way, specifically because I've learned to NEVER
return by ref an input argument exactly because of this...
Side question, is this legal?
"int a = min(min(1,2), min(3,4));"
How long do those temps last? I like this piece of code, because
the previous had that fishy "const int&", which raises eyebrows,
but I think this example could blindsind even the most careful
programmer.
EDIT: In this specific example, those might be statics, so the
code would be legal, but what if we replace those ints with
"foo()"s ?
