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@softbase(FullStack ITエンジニア)

Swift のOptionalをUnwrapする５つの方法　４個目はお勧め

Posted at 2020-09-18

1. Force Unwrapping

optional!

2. Check for ni value

if optional != nil {
	optional!
}

3. Optional Binding

if let safeOptional = optional{
	safeOptional
}

4. Nil Coalescing Operator ??

optional ?? defaultValue

5. Optional Chaining

optional?.property
optional?.method()

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