// boolean型 let flag: boolean = false; // number型 let age: number = 30; // string型 let member: string = '山田太郎' // string型(テンプレート文字列) let message = `私の 名前は${member}です`; // 配列型 let pet: string[] = ['犬', '猫', 'ハムスター']; console.log(pet[2]); // ハムスター // オブジェクト型(連想配列):インデックスシグニチャ let duet: { [index: string]: string; } = { first: '山田', second: '鈴木' }; console.log(duet['first']); // 山田 // オブジェクト型(interfac
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