How to work with array of maps in Typescript-CodePudding

I've got a problem with initialize an arrays of map objects in my typescript interface like below:

interface SomeInterface{
    id: string,
    types: Array<Map<string, number>>;
}

I need to create object with field types as an array which will be hold many of map with string and number. I want this, but i don't know how to add new map into this array.

I try even in this way but it not work and types is still an empty object:

const t: Array<Map<string, number>> = new Array<Map<string, number>>();
const map = new Map<string, number>();

t.push(map.set("test1", 2));
t.push(map.set("test2", 5));

const a: SomeInterface= {
    id: "test",
    types: t
}

console.log(a); 
//{
//  "id": "test",
//  "types": [
//    {},
//    {}
//  ]
//}

Can someone tell me how to add new map into an typescript array?

thanks for any help!

CodePudding user response：

According to your code I would do something like following

const t: Array<Map<string, number>> = new Array<Map<string, number>>();


t.push(new Map([["test1", 2]]));
t.push(new Map([["test12", 5]]));

CodePudding user response：

Here's an example showing how you can:

create an array of maps
create a new map
set items in the map
push the map into the array

TS Playground

const arrayOfMaps: Array<Map<string, number>> = [];

// create a map
const map1 = new Map<string, number>();

// add entries to the map
map1.set("test1", 1);
map1.set("test2", 2);

// insert the map at the end of the array
arrayOfMaps.push(map1);

console.log(arrayOfMaps); // [Map (2) {"test1" => 1, "test2" => 2}]

const firstMapInArray = arrayOfMaps[0];
console.log(firstMapInArray); // Map (2) {"test1" => 1, "test2" => 2}
console.log(firstMapInArray === map1); // true