javascript - Why doesn't JsArrayString implement iterable? -

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quick question here -- used jsarraystring first time, , surprised didn't work:

jsarraystring object = ...; (string s : object)

so wrote c-style loop:

jsarraystring object = ...; (int i=0; i<object.length(); i++) {     s = object.get(i)     ...

not big deal, seems have been simple gwt team have jsarraystring implement iterable, wanted check , make sure wasn't missing something...

i suspect it's matter of code bloat , matter code size. if make jsarray implement iterable, might open door other additions wouldn't useful. jsarrays meant absolutely simple , barebones possible.

additionally, write own jsiterable class if want behavior, said should pretty trivial implement.

the lightweight collections design doc addresses of issues around using jre collections , related concepts , discusses features left unsupported ensure absolute minimum code size, including:

until gwt compiler can optimize (which cannot date), new collections not support java enhanced 'for' loop syntax uses iterable/iterator. believe such optimizations possible , added, however, @ time, these collections retrofitted implement iterable.


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