Closed
Bug 791348
Opened 12 years ago
Closed 10 years ago
replace for-each statement to for-of statement
Categories
(Firefox :: General, defect)
Firefox
General
Tracking
()
RESOLVED
DUPLICATE
of bug 925989
People
(Reporter: teramako, Unassigned)
References
Details
ECMA-357(E4X) is deprecated. We should use for-of statement instead of for-each statement
Updated•12 years ago
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Status: UNCONFIRMED → NEW
Ever confirmed: true
Comment 1•12 years ago
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Bug 737792 did this on the browser side. Will need to look at this a bit carefully: for-each works on both plain objects and arrays (although one should avoid using it with arrays), whereas for-of only works on arrays. Quick test because I always confuse these forms... :/ for each (let a in { a:1, b:2 }) --> 1,2 for (let a of { a:1, b:2 }) --> Exception: not iterable for (let a in { a:1, b:2 }) --> a,b for each (let a in ["a", "b"]) --> a,b for (let a of ["a", "b"]) --> a,b for (let a in ["a", "b"]) --> 0,1
How about for (let [, v] of Iterator({ a: 1, b: 2})) --> 1, 2
Comment 3•12 years ago
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(In reply to teramako from comment #2) > How about > > for (let [, v] of Iterator({ a: 1, b: 2})) --> 1, 2 Is for-each support going to be dropped? If not, I'd rather keep using it in such cases. Otherwise I'd use for-in with an extra assignment rather than what you propose.
(In reply to Dão Gottwald [:dao] from comment #3) > (In reply to teramako from comment #2) > > How about > > > > for (let [, v] of Iterator({ a: 1, b: 2})) --> 1, 2 > > Is for-each support going to be dropped? If not, I'd rather keep using it in > such cases. Otherwise I'd use for-in with an extra assignment rather than > what you propose. Not now, but for-each is defined by ECMA-357 and the specification is deprecated. Then for-each will be non-standard (not de-facto standard at least). Using standardized code as far as possible is better.
Updated•10 years ago
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Status: NEW → RESOLVED
Closed: 10 years ago
Resolution: --- → DUPLICATE
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Description
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