Intersection on Array of Objects

[jintoppy]

Is it possible to include the intersection on array of objects as a method in the library itself?

[jdalton]

You can customize the matching of values by customizing _.indexOf.

var objects = [{ 'a': 1 }, { 'a': 2 }],
    other = [{ 'a': 2 }, { 'a': 3 }];

var _ = require('lodash').runInContext();
_.indexOf = _.findIndex;
_.intersection(objects, other);
// => [{ 'a': 2 }]

[vigneshnrfs]

Hi.

I would like to do intersection based on a particular property in the object. For example, id in the below example.

var objects = [{ 'id': 1,data:[{...}] }, { 'id': 2,data:[{...}] }],
    other = [{ 'id': 2 ,data:[{...}] }, { 'id': 3,data:[{...}]  }];

The intersection of the above two objects based on id should be {'id':2,data:[{...}]
Is it possible to accomplish it ?

[jdalton]

@vigneshnrfs
In our edge master branch in prep for v4 I've added _.intersectionBy so you could do _.intersectionBy(objects, other, 'id')

[smonff]

For people who would end up here after Googling, please read this Stack Overflow answer.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.