On Fri, Oct 7, 2011 at 12:09 PM, Fyodorov "bga" Alexander
<[email protected]> wrote:
>
>
> reason why many js coders still use ; is because they use other old
> langs such as c++/java. New langs such as Go and Scala dont requires ;
> because in most cases \n is ;.
I agree on that, and in a language designed to not need semicolons, by
all means omit them.
My point is that I don't consider Javascript to be such a language. In
Javascript, omitting semicolons has been added as an afterthought,
with exceptions and tricky edge-cases that will eventually bite you.
Going for saving a semicolon per line at the cost of reducing
readability (to those people used to using semicolons in Javascript)
and reducing the obviousness of some tricky bugs just isn't worth it.
>
> Imho ; is history of programming langs.
> ASI rules is so simple.
Simple rules can have complex consequences.
> Just dont write {return\n}, {throw\n} and
> {_foo()\n()} but who really write this code? Its abnormal code.
Or:
initializeSomething()
(function() {
// local scope for something
})()
Or:
a = b
(foo.bar || foo.baz).setLength(a)
Or:
a = b
["one","two"].forEach(function(v) { o[v] = f(v) })
Nobody would write that, right?
> Since i use only modern langs i can forget about ; completely, its just
> syntax noise and force me type more. I type ; only one line lambdas to
> have explicit separator for my eyes. If i need write on some old lang
> - i can make small script which emulate ASI for this lang.
Personally, I think writing in a language should be done on that
language's premises. That's what makes code sharing possible. If
everybody writes in their own language, they might be very productive,
but what they produce just isn't useful or maintainable. That's the
reason Java chose to not have C-style preprocessor macros.
And I still think semicolons belong in Javascript. Sure, they can be
omitted, but it's not going to make anybody more productive (typing
isn't the bottleneck of programming), and the pitfalls are such that
you need a different, but just as systematic, way of using semicolons
where necessary.
Not something I'd recommend for beginners - just concentrate on the
meaning of the language constructs, and don't try to be smart with the
syntax.
/L 'old and grumpy'
/L
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