The static ResetAll() method is a global, application-wide function that restores the uCalc library to its pristine, out-of-the-box state. It is a powerful tool for ensuring a clean environment, particularly in testing scenarios or applications with complex, dynamic configurations.

⚙️ What ResetAll Does

Calling this function performs the following actions:

1. Releases All Instances: Every uCalc instance created during the application's lifetime is released, freeing all associated memory.
2. Clears the Default Stack: It completely clears the default instance stack, which is managed by methods like IsDefault.
3. Resets the Root Default: It restores the original, built-in DefaultInstance instance to its initial state, removing any user-defined functions, variables, or settings.

🎯 When to Use ResetAll

ResetAll is the most comprehensive cleanup tool and should be used when you need to guarantee a completely fresh start. Common use cases include:

• Unit Testing: It is best practice to call ResetAll() in the TearDown or afterEach method of a test suite to ensure that each test runs in a perfectly isolated environment, free from any state created by previous tests.
• Application-Level Reset: In applications that allow users to script or configure the engine, ResetAll can power a "Reset to Factory Defaults" feature.
• Recovering from Errors: In an interactive or long-running session, it provides a reliable way to recover from a state where definitions may have become corrupted or are no longer needed.

🆚 ResetAll vs. Other Reset Methods

It is crucial to choose the correct cleanup method for your needs. ResetAll is the most powerful and destructive option.

⚠️ Warning: Because ResetAll() affects the entire application, use it with care. Calling it will invalidate all existing uCalc object handles, including any that may still be in scope.