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Chapter 8. Datatypes and Type Checking > Strict Mode's Three Special Cases
8.3. Strict Mode's Three Special Cases
There are three situations in which the compiler ignores type mismatch errors in strict mode, deferring possible type errors until runtime:
When an untyped expression is assigned to a typed variable or parameter, or returned from a function with a declared return type
When any expression is assigned to a typed variable or parameter whose declared type is Boolean, or returned from a function whose declared return type is Boolean
When any numeric value is used where an instance of a different numeric type is expected
