Reverse Boolean
- 2 minutes to read
In This Article
Reverses the logical meaning of a Boolean variable, and appropriately inverts all references and assignments to the variable to ensure program behavior remains unchanged. This refactoring is useful when you want to reverse the semantic meaning of a Boolean variable (e.g., changing “notFound” to “found”), and can clean up hard-to-read expressions (e.g., “!notFound” can become simply “found” in C#). After this refactoring completes, the Boolean variable is highlighted for an easy rename, so you can give the variable a new name that is the semantic opposite of the old name.
#Availability
Available from the context menu or via shortcuts:
- when the caret is on a Boolean variable declaration.
#Examples
public MyClass()
{
_DataNotFound = !FindData();
}
public void ProcessData()
{
if (_DataNotFound)
return;
DataProcessor.OutputDataInfo(_Data);
}
private object _Data;
private bool │_DataNotFound;
Public Sub New()
_DataNotFound = Not FindData()
End Sub
Public Sub ProcessData()
If _DataNotFound Then
Return
End If
DataProcessor.OutputDataInfo(_Data)
End Sub
Private _Data As object
Private │_DataNotFound As Boolean
Result:
public MyClass()
{
_DataNotFound = FindData();
}
public void ProcessData()
{
if (!_DataNotFound)
return;
DataProcessor.OutputDataInfo(_Data);
}
private object _Data;
private bool _DataNotFound;
Public Sub New()
_DataNotFound = FindData()
End Sub
Public Sub ProcessData()
If Not _DataNotFound Then
Return
End If
DataProcessor.OutputDataInfo(_Data)
End Sub
Private _Data As object
Private _DataNotFound As Boolean
#Screenshot
