CODEWITHSUNDEEP
javascripttypescript
HelloWorld
HelloWorld

Reputation: 1863

How to use a custom object as a key in a map in TypeScript?

I use TypeScript and I created a map using new Map<KEY, TYPE> where KEY is either a string, float or number.

In one special case I would like to use a custom class as a key to preserve some data structures:

class Foo {
   name: string;
   data1: any;
   data2: any;
};

const map = new Map<Foo, ...>();

map.set(fooObject1, someData);
map.set(fooObject2, someData);
map.set(fooObject3, someData);

map.get('nameOfFooObject');

I would like to use name as the key identifier, but as said I would need to preserve data1 and data2 as well. Is there a way to set a primitive type as a key with a function to point to the key?

Upvotes: 0

Views: 932

Answers (1)

Z .
Z .

Reputation: 12837

Instead of having that custom object for key (which if you think about how map works you'll see is a bad idea), create a custom object for the value and add all properties that you want to preserve there.

Upvotes: 1

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