D3-VTV Variable Type Validation

Ensuring that a variable has the correct type.

How it Works A developer should consider how the variable will be used throughout the program and choose the correct variable type. A developer should programmatically check if a variable has the correct (expected) type before using that variable. Considerations • The result of an operation on an unexpected variable type will vary based on the language. • Note: This resource should not be considered a definitive or exhaustive coding guideline.