groovy

Regular-Expression-Evaluates-Null-As-True

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Issue reported groovy-user forum: http://www.nabble.com/Regular-Expression-Evaluates-Null-As-True--to25223536.html

/ * Returns true */
println null ==~ /[^0-9]+/

/ * Returns false */
println null ==~ /[0-9]+/

In both the cases, it should probably just throw NPE.

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Roshan Dawrani added a comment -

Fixed. Pattern check against null now throws NPE and is consistent with Java.

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Roshan Dawrani added a comment - Fixed. Pattern check against null now throws NPE and is consistent with Java.
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Roshan Dawrani added a comment -

Discussion on the dev list brought out that returning false was a much suitable result compared to NPE.

NPE behavior introduced in pass-1 fix created an issue with Gant build that was using null ==~ something kind of pattern matching in some cases.

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Roshan Dawrani added a comment - Discussion on the dev list brought out that returning false was a much suitable result compared to NPE. NPE behavior introduced in pass-1 fix created an issue with Gant build that was using null ==~ something kind of pattern matching in some cases.

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  • Assignee:
    Roshan Dawrani
    Reporter:
    Roshan Dawrani
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