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Flutter ?? Usecase of Null-Aware Operator Wayne Tsai

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What the Null-Aware Operator print(null ?? 'right'); print(true ?? 'right'); print(false ?? 'right'); print('left' ?? 'right'); print(['left'] ?? 'right'); print({'left': true} ?? 'right'); print(['left'] ?? 'right'); right true false left [left] {left: true} [left]

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Cache Function

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Cache Function in Javascript

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Cache Function usage in js

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Cache Function in Dart - V1

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Cache Function in Dart - V2