On Thu, Jul 11, 2013 at 9:22 PM, Andrew Fedoniouk <[email protected]> wrote: > Quite often I see constructions like this: > > foo({one:1,two:2}); > > so call of function with single parameter - object literal. > Idiom named "Poor man named arguments passing" > > Idea is to extend existing JS/ES syntax calls to support > simple form of the call above: > > foo {one:1,two:2 }; > > Semi-formally that syntax looks like: > > function-call: > <name-token> '(' <parameter-list> ')' // existing form > <name-token> <object-literal> // proposal > > This syntax extension will not break correct pre-ES6 code > as far as I can tell. But I am not sure about new ES6 arrivals. > > In fact we can add even more generic form of function call: > > foo 1,2,"three"; > > that is an equivalent of foo(1,2,"three"); > > In this case grammar may look like: > > function-call: > <name-token> '(' <parameter-list> ')' // existing form > <name-token> <parameter-list> // proposal > > Where <parameter-list> is comma ',' separated list of expressions. > > Just to reduce that bracketing noise in syntax.
I'm not a fan of this, because it only gets us part of the way toward the benefits of real named parameter support, and makes it even less likely that we'll actually get to the end. Python has it good - every argument can be given either by position or by name, and you can collect both extra positional arguments and extra named arguments. I'd prefer figuring out a syntax for argument lists that gives us the same argument-list power as Python. ~TJ _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
