33 lines
1.0 KiB
Plaintext
33 lines
1.0 KiB
Plaintext
include::../why-dotnet.adoc[]
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== How to fix it
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=== Code examples
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==== Noncompliant code example
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[source,vbnet,diff-id=1,diff-type=noncompliant]
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----
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Sub Regexes(Input As String)
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Dim Rx As New Regex("[A") ' Noncompliant: unmatched "["
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Dim Match = Regex.Match(Input, "[A") ' Noncompliant
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Dim NegativeLookahead As New Regex("a(?!b)", RegexOptions.NonBacktracking) ' Noncompliant: negative lookahead without backtracking
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Dim NegativeLookbehind As New Regex("(?<!a)b", RegexOptions.NonBacktracking) ' Noncompliant: negative lookbehind without backtracking
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End Sub
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----
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==== Compliant solution
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[source,vbnet,diff-id=1,diff-type=compliant]
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----
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Sub Regexes(Input As String)
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Dim Rx As New Regex("[A-Z]")
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Dim Match = Regex.Match(Input, "[A-Z]")
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Dim NegativeLookahead As New Regex("a(?!b)")
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Dim NegativeLookbehind As New Regex("(?<!a)b")
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End Sub
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----
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include::../resources-dotnet.adoc[]
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include::../rspecator.adoc[]
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