External module "utils/saveArrDups"

saveArrDups

• saveArrDups(arr: any[][]): Promise<any[]>

• Get only duplicates from array of arrays

  Example:

  let a = [[], [], ['a', 'b', 'c']];
  let b = saveArrDups(a);
  console.log(b); // [];
  
  let a = [['a'], ['a'], ['a', 'b', 'c']];
  let b = saveArrDups(a);
  console.log(b); // ['a', 'a', 'a'];
  
  let a = [['a', 'a','b','b'], ['c','b','a'],['a','c','b']];
  let b = saveArrDups(a);
  console.log(b); // ['a', 'b'];
  

  Parameters

  • arr: any[][]

  Returns Promise<any[]>