How to delete multiple objects from an array?

Question

How to delete multiple objects from an array?

Currently I have

let arry1 = [
    {
        id:0,
        name:'My App',
        another:'thing',
    },
    {
        id:1,
        name:'My New App',
        another:'things'
    },
    {
        id:2,
        name:'My New App',
        another:'things'
    }
];

Then I have an indexes array like this

let arry2 = [1, 2]; // Indexes to delete

finally the result has to be:

let arry1 = [{
    id:0,
    name:'My App',
    another:'thing',
}]

Answer 1

You can use filter. It expects an predicate and will return an elemtent if the predicate returns true. I used excludes as predicate and it will return false if the current index is inside the indicesToRemove.

objects.filter((object, index) => excludesIndicesToRemove(index))

const objects = [{
    id: 0,
    name: 'My App',
    another: 'thing',
  },
  {
    id: 1,
    name: 'My New App',
    another: 'things'
  },
  {
    id: 2,
    name: 'My New App',
    another: 'things'
  }
]

const indicesToRemove = [1, 2]

const not = bool =>
  !bool

const includes = xs => x =>
  xs.includes(x)

const excludes = xs => x =>
  not(includes(xs)(x))

const excludesIndicesToRemove = excludes(indicesToRemove)

console.log(
  objects.filter((object, index) => excludesIndicesToRemove(index))
)