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Hello. I have these two arrays: let x = [

{id: "A1", name: "test1"},
{id: "A2", name: "test2"}
];

let y = [
{id: "A1", description: "desc1"}
];

How can I combine them like a SQL inner join on 'id' attribute?
z <-- [
{id: "A1", name: "test1", description: "desc1"},
{id: "A2", name: "test2"}
]

?

I have troubles into doing that using map and reduce, so far I found this but I still have duplicates:
let z = x.map((item, i) => Object.assign({}, item, y[i]));

I also found a solution with forEach that wasn't really efficient, that's why I'm asking you. Thanks for help in advance.

3 ответов

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didn't know ed sheeran did programming

If you want an efficient solution, you could make a Map<ID, object[]>, then go through that map and merge the object arrays

Fabi- Автор вопроса
drunktimelord
didn't know ed sheeran did programming

haha, you don't know how many people told me that phrase :O

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