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loicdescotte/structural_typing.ts

Last active June 17, 2018 07:38
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typescript strucural typing
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structural_typing.ts
interface HasScore {
score: number;
// also works with functions instead of properties
}
let player = { score: 0 };
function addPointsToScore(player: HasScore, points: number): void {
player.score += points;
}
addPointsToScore(player, 5);
console.log(player.score); //5
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