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Variable Type Validation

Definition

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.

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References

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External Knowledge Base

The following references were used to develop the Variable Type Validation knowledge-base article.

(Note: the consideration of references does not imply specific functionality exists in an offering.)

Why type checking?

Reference Type: External Knowledge Base Organization: Princeton University

Source:

https://www.cs.princeton.edu/courses/archive/fall98/cs441/mainus/node4.html

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