OptionalMethodParameter.md

Pattern: Use of Optional as parameter type for method

Issue: -

Description

Do not use an Optional as a parameter type for a method or constructor.

Examples:

class MyClass {
	protected MyClass(Optional<Integer> count) { }                  // violation
	MyClass(Optional<String> name, Optional<Integer> sum) { }       // 2 violations
	private MyClass(Optional something) { }                         // violation

	void doStuff(Optional<Integer> count) { }                       // violation
	public String getName() { return 'abc' }
	int count(Optional<String> alias, Optional<Integer> total) { }  // 2 violations
	private doSomething(Optional something) { }                     // violation
}

Further Reading

• CodeNarc - OptionalMethodParameter