Rick Waldron wrote:
On Tue, Jun 12, 2012 at 10:38 AM, Felix Böhm <esdisc...@feedic.com
<mailto:esdisc...@feedic.com>> wrote:
Per definition, rest parameters always need to be at the end of a
FormalParameterList. I was wondering if this limitation could be liftet.
Consider:
function foo( a, b, ...others, c ) {
return [ a, b, others, c ];
}
foo( 1, 2, 3, 4, 5, 6, 7, 8, 9 );
a b others
[ 1, 2, [ 3, 4, 5, 6, 7, 8, 9 ] ]
How do you resolve where to stop claiming arguments as items in the rest
param "others"?
[ 1, 2, [ 3, 4, 5, 6, 7, 8 ] ]
As I understand Felix's idea, it's that the parameters after ...rest eat
up the last ones. Using last (or last few) params is the often used (not
that I like it) pattern - node.js is full of it since callback is always
last.
But I understand there are problems. First, what with optional params
after ...rest. And the second, how to parse it when foo(1, 2) called?
Rick
Herby
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