有没有办法在我的代码中使用Typescript.Collections.HashTable？

Question

我在Typescript编译器的代码中看到了"HashTable"的实现(在文件src/compiler/core/hashTable.ts中).

你知道有没有办法直接在我的Typescript项目中使用它？

Answer 1

您可以通过定义接口来实现一个非常简单的哈希表,其中键是一个字符串

class Person {
    name: string;
}

interface HashTable<T> {
    [key: string]: T;
}

var persons: HashTable<Person> = {};
persons["bob"] = new Person();
var bob = persons["bob"];

它只能键入字符串或数字.

Answer 2

下载文件“hashTable.ts”并将其放在您的文件旁边。然后在文件顶部执行以下操作：

///<reference path='hashTable.ts' />

PS：我建议您查看我编写的库 TypeScript Generic Collections。这是一个字典示例：

class Person {
    constructor(public name: string, public yearOfBirth: number,public city?:string) {
    }
    toString() {
        return this.name + "-" + this.yearOfBirth; // City is not a part of the key. 
    }
}

class Car {
    constructor(public company: string, public type: string, public year: number) {
    }
    toString() {
        // Short hand. Adds each own property 
        return collections.toString(this);
    }
}
var dict = new collections.Dictionary<Person, Car>();
dict.setValue(new Person("john", 1970,"melbourne"), new Car("honda", "city", 2002));
dict.setValue(new Person("gavin", 1984), new Car("ferrari", "F50", 2006));
console.log("Orig");
console.log(dict);

// Changes the same john, since city is not part of key 
dict.setValue(new Person("john", 1970, "sydney"), new Car("honda", "accord", 2006)); 
// Add a new john
dict.setValue(new Person("john", 1971), new Car("nissan", "micra", 2010)); 
console.log("Updated");
console.log(dict);

// Showing getting / setting a single car: 
console.log("Single Item");
var person = new Person("john", 1970); 
console.log("-Person:");
console.log(person);

var car = dict.getValue(person);
console.log("-Car:");
console.log(car.toString());