On Sun, Jul 6, 2014 at 10:36 PM, Isiah Meadows <[email protected]> wrote:
> My responses are inline. > > > From: Alex Kocharin <[email protected]> > > To: Oliver Hunt <[email protected]>, Dmitry Soshnikov < > [email protected]> > > Cc: es-discuss <[email protected]> > > Date: Sun, 06 Jul 2014 12:07:09 +0400 > > Subject: Re: Trailing comma for function arguments and call parameters > > > > > In fact, how about the same syntax for arrays and function calls? With > trailing commas and elisions? > > > > So foo(1,,3,,) would be an alias for foo(1,undefined,3,undefined) ? > > > > > > 06.07.2014, 11:57, "Alex Kocharin" <[email protected]>: > > > Unless you use leading comma style, trailing commas are very good to > have for anything that has variable amount of items/keys/arguments. > > > > > > This is a classic example I use to show why JSON is a bad idea: > https://github.com/npm/npm/commit/20439b21e103f6c1e8dcf2938ebaffce394bf23d#diff-6 > > > > > > I believe the same thing applies for javascript functions. If it was a > bug in javascript, I wish for more such bugs really... > > > > > > 04.07.2014, 20:33, "Oliver Hunt" <[email protected]>: > > >> On Jul 3, 2014, at 3:52 PM, Dmitry Soshnikov < > [email protected]> wrote: > > >>> Hi, > > >>> > > >>> Will it makes sense to standardize a trailing comma for function > arguments, and call parameters? > > 2. Function statements usually don't have such long lists of arguments > that such a thing would truly become useful. That is rare even in C, where > you may have as many as 6 or 7 arguments for one function. > Yes, it's true, however, my use-case was based on 80-cols rule we use in our code-base. And with type annotations (especially type annotations with generics, when you have types like `Map<string, IParamDefinition> $params`, etc) it can quickly become more than 80 cols, and our style-guide is to use each parameter on its own line, with a trailing comma for convenience of future adding that will preserve git blame logs if one doesn't need always append the comma on previous line, in case when adding a new parameter. But again, I already think that for the language itself, it won't be super useful just yet, since backward-incompatible syntax won't allow using it anyways for a long amount of time, and not everyone has the build/transform step, that allows adopt this for older versions. That's said, a local extension seems the way to go for me. Dmitry
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