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support type promotion for more complex predicates in inference #18604

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ghost opened this issue May 2, 2014 · 2 comments
Closed

support type promotion for more complex predicates in inference #18604

ghost opened this issue May 2, 2014 · 2 comments
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type-bug Incorrect behavior (everything from a crash to more subtle misbehavior) web-dart2js

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@ghost
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ghost commented May 2, 2014

For pure predicates p we should be able to infer

if (a is List && p) {
  // a known as List
}
@ghost ghost self-assigned this May 2, 2014
@kevmoo kevmoo added type-bug Incorrect behavior (everything from a crash to more subtle misbehavior) and removed priority-unassigned labels Feb 29, 2016
@natebosch
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As far as I can tell this type promotion is working. If it isn't please add a concrete example.

@zoechi
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zoechi commented Jul 26, 2018

Perhaps a limitation like discussed in #33932

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type-bug Incorrect behavior (everything from a crash to more subtle misbehavior) web-dart2js
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@kevmoo @zoechi @natebosch