Static code analysis can find hundreds of opportunities in VBA code.
Rubberduck builds its own internal representation of the code, and then proceeds to analyze it. Each individual inspection can easily be disabled, or configured to issue inspection results at different severity levels ranging from
Use the Inspection Results toolwindow to review Rubberduck’s findings, search, filter, regroup results by inspection, location, type, or severity. Each inspection result comes with a detailed description of what’s being flagged and why, so you can make an enlightened decision.
Unless configured otherwise, Rubberduck automatically runs inspections after the a parser/resolver cycle completes (regardless of whether the inspection results toolwindow is displayed or not).
For the best experience, it would be recommended to first try Rubberduck with an empty project, add a new module, and write, say, a loop that counts 1 to 10 and outputs to the debug pane - then to parse that and review the inspection results; carefully review the inspection settings, and consider disabling the inspections that irreconcilably clash with your preferences: use meaningful names alone can easily produce hundreds upon hundreds of results if you’re not that much into using vowels, or if you, say, prefix all your variable names; these inspections can be re-enabled anytime you’re ready!
This tab lists all items found in the .xml documentation assets from the latest pre-release build. To modify this content, a pull request must be merged into the [next] branch.
Warns about 'Declare' statements that are using the obsolete/unsupported 'CDecl' calling convention on Windows.
The CDecl calling convention is only implemented in VBA for Mac; if Rubberduck can see it (Rubberduck only runs on Windows), then the declaration is using an unsupported (no-op) calling convention on Windows.
Flags usages of members marked as obsolete with an @Obsolete("justification") Rubberduck annotation.
Marking members as obsolete can help refactoring a legacy code base. This inspection is a tool that makes it easy to locate obsolete member calls.
Flags declarations where a type hint is used in place of an 'As' clause.
Type hints were made obsolete when declaration syntax introduced the 'As' keyword. Prefer explicit type names over type hint symbols.
Flags 'While...Wend' loops as obsolete.
'While...Wend' loops were made obsolete when 'Do While...Loop' statements were introduced. 'While...Wend' loops cannot be exited early without a GoTo jump; 'Do...Loop' statements can be conditionally exited with 'Exit Do'.