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Add a hint to identify unused variables #16812

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bwilkerson opened this issue Feb 13, 2014 · 7 comments
Closed

Add a hint to identify unused variables #16812

bwilkerson opened this issue Feb 13, 2014 · 7 comments
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analyzer-warning Issues with the analyzer's Warning codes area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. P2 A bug or feature request we're likely to work on type-enhancement A request for a change that isn't a bug

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@bwilkerson
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There should be a hint that would identify unused variables. The following are some examples:

import 'dart:html';
int myint1;//Not Used
int myint2=0;//Not Used
void main() {
    int myint3=0;//Not Used
    int myint4;//Not Used
    String myStr;//Not Used
}
@bwilkerson
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Honestly, this issue was created to capture a user request on the dart-editor mailing list, and I have not given it much thought. I expect that our first pass would only flag local variables in order to avoid such questions. But it's a good question, and one we would need to discuss before trying to do this for top-level variables.

@clayberg
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clayberg commented Apr 1, 2014

Added Analyzer-Hint label.

@srawlins
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This is a dup of Issue #12256, yes?

@bwilkerson
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This is a dup of Issue #12256, yes?

Almost. This adds a request for detecting unused top-level variables as well.

@kasperl
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kasperl commented Jul 10, 2014

Removed this from the Later milestone.
Added Oldschool-Milestone-Later label.

@kasperl
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kasperl commented Aug 4, 2014

Removed Oldschool-Milestone-Later label.

@bwilkerson bwilkerson added Type-Enhancement area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. analyzer-warning Issues with the analyzer's Warning codes labels Aug 4, 2014
@kevmoo kevmoo added P2 A bug or feature request we're likely to work on type-enhancement A request for a change that isn't a bug and removed triaged labels Mar 1, 2016
@srawlins
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This hint exists. Close?

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analyzer-warning Issues with the analyzer's Warning codes area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. P2 A bug or feature request we're likely to work on type-enhancement A request for a change that isn't a bug
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@kevmoo @srawlins @kasperl @bwilkerson @clayberg