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fix($parse): mark constant unary minus expressions as constant #6932
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Make Parser.ZERO a constant expression function, so that unary minus expressions that use it may be marked constant.
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caitp
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Apr 2, 2014
Previously, constant numbers with a unary minus sign were not treated as constants. This fix corrects this behaviour, and may provide a small performance boost for certain applications, due to constant watches being automatically unregistered after their first listener call. Closes #6932
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Request Type: bug
How to reproduce: Parse an expression like
-42. Check itsconstantflag. Expected:true. Actual:false.Component(s): $parse
Impact: small
Complexity: small
This issue is related to:
Detailed Description:
Expressions that use the unary
-operator are currently never marked as constants.Make
Parser.ZEROa constant expression function, so that unary minusexpressions that use it may be marked constant.
Other Comments: