External module "utils/bifurcate-by/docs/types/index.d"

Export assignment bifurcateBy

• bifurcateBy(collection: Collection, predicate: Predicate): Array<Array<any>>
• bifurcateBy(collection: Collection, options: Options, predicate: Predicate): Array<Array<any>>

• Splits values into two groups according to a predicate function.

  Notes

  • When invoked, the predicate function is provided two arguments:

    • value: collection value
    • index: collection index

  • If a predicate function returns a truthy value, a collection value is placed in the first group; otherwise, a collection value is placed in the second group.

  • If provided an empty collection, the function returns an empty array.

  Parameters

  • collection: Collection

    input collection

  • predicate: Predicate

    predicate function indicating which group an element in the input collection belongs to

  Returns Array < Array < any > >

  group results

  Example

  function predicate( v ) {
      return v[ 0 ] === 'b';
  }
  var arr = [ 'beep', 'boop', 'foo', 'bar' ];
  
  var out = bifurcateBy( arr, predicate );
  // returns [ [ 'beep', 'boop', 'bar' ], [ 'foo' ] ]

• Splits values into two groups according to a predicate function.

  Notes

  • When invoked, the predicate function is provided two arguments:

    • value: collection value
    • index: collection index

  • If a predicate function returns a truthy value, a collection value is placed in the first group; otherwise, a collection value is placed in the second group.

  • If provided an empty collection, the function returns an empty array.

  Parameters

  • collection: Collection

    input collection

  • options: Options

    function options

  • predicate: Predicate

    predicate function indicating which group an element in the input collection belongs to

  Returns Array < Array < any > >

  group results

  Example

  function predicate( v ) {
      return v[ 0 ] === 'b';
  }
  var arr = [ 'beep', 'boop', 'foo', 'bar' ];
  
  var opts = {
      'returns': 'indices'
  };
  var out = bifurcateBy( arr, opts, predicate );
  // returns [ [ 0, 1, 3 ], [ 2 ] ]

  Example

  function predicate( v ) {
      return v[ 0 ] === 'b';
  }
  var arr = [ 'beep', 'boop', 'foo', 'bar' ];
  
  var opts = {
      'returns': '*'
  };
  var out = bifurcateBy( arr, opts, predicate );
  // returns [ [ [ 0, 'beep' ], [ 1, 'boop' ], [ 3, 'bar' ] ], [ [ 2, 'foo' ] ] ]