On 09/02/2015 06:28 PM, Jack Stouffer wrote:
I wanted some second opinions on an idea I had for D before I made a
bugzilla issue.
Currently in D, to have a statement run only in debug mode, you can mark
it with the debug keyword. But, there is currently no way to mark a
statement so that it only runs in release. So what I propose is a
release statement like so:
debug {
// only runs when -debug is given
}
release {
// only runs when -release is given
}
Or, if adding a new keyword to the language is a no go, it could be done
like so:
debug {
// only runs when -debug is given
} else {
// only runs when -release is given
}
I have run into a need for this twice in one day, both having to do with
unit tests in phobos. For the first one, I needed a way to make sure
that a function is @nogc in release. For the other, the function I was
tested had different outputs for release and debug if the input was an
empty range, and I had no way to test both cases.
Its behaviour literally depended on the -release flag? How?
I can think of several other use cases off the top of my head. One, If
you have a GUI application that checks for a serial number on startup,
there's no reason to do that check in a debug build. Or, if your making
a game, there's no reason to do the opening logo crawl before the menu
if your using debug mode.
A rebuttal to this might be to just use version and pass something in
during compilation. The problem that I have is this is not a solution
for the phobos code that I am working on.
version(assert){}else{
// only runs when -release is given
}
