Booleans

Boolean values are exactly true or false and are commonly produced by comparisons. Keep boolean conditions explicit; truthy values such as non-empty strings are not the same thing as the boolean value true. Strict comparisons help distinguish values of different types. Here a strict comparison returns a boolean that can be used directly in an if statement or stored as a feature flag. Further guidance Inspect a value before relying on an implicit conversion. Keep input validation separate from casting, use strict comparisons when type matters, and choose an explicit representation for values such as money or optional data. Try normal, empty, and unexpected inputs so the result is deliberate. Practice task: Create a fresh example for Booleans. Predict the result before running it, then change one input and explain why the result changes. Test a normal case and one boundary or invalid case where it applies. Compare your output with the example and note one rule you would use in a real project.