Function render after splice and setState()

Question

I want my React function to re-render after I splice an array.

Here Is (part of) the function (using Hooks):

function showProblem() {
  const [andArray,          


        

Answer 1

.splice mutates the array. React states have to be immutable. The immuatble way would be:

  setAndState(and.filter((_, i2) => i2 !== i));