Hello Gophers,
There's two tiny pieces of syntactic sugar I really miss from a few other
languages that I think would add a nice bit of ergonomics and convenience to Go
(which I now play as my main) without increasing any magic or spooky action at
a distance.
They are:
- postfix conditionals
and
- until (while!) and unless (if!) (which probably also means adding `while`)
This allows for lovely expressions such as the following examples:
i.NotifySomeone() if j.HasExpiredItems()
time.Sleep(1 * time.Second) until thing.IsReady()
b.ReportActivity(e) unless u.HasOptedOut()
q.ProcessItem() while server.Active()
until(time.Now().After(notAfter)) {
// do something while we still can
}
p.processEvents() until p.shutdownRequested
and, my favorite:
panic("can't even") if err != nil
There are, of course, various ways of doing some of this sort of
synchronization stuff in these contrived examples using
channels/goroutines/timers, but this sort of syntax is quite useful for simple
straight-line synchronous code, and, in my view, increases readability without
sacrificing anything.
I know that `while` isn't a distinct thing in Go, and for consistency's sake,
this might necessitate adding such a construct as well (if you can use it as a
postfix conditional, you should probably be able to use it as `while(cond) {}`
too).
What do you think? I really miss this syntax from other languages. It's been
in Perl and Ruby for ages, and, more recently, CoffeeScript had it for a
moment, but it didn't make it over into ES with the other notable features from
it. I think it's a lovely convenience without changing the operation of the
language itself.
Best,
-sneak
--
Jeffrey Paul - [email protected]
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