Node.js lodash reject() remove matches from the collection

var _ = require('lodash');

var people = [//  w ww  .j  a  va2 s .  c o m
  { id: 1, name: "Jim", age: 20, gender: 'm', enabled: true },
  { id: 1, name: "Jim", age: 20, gender: 'm', enabled: false },  
  { id: 2, name: "Bob", age: 34, gender: 'm', enabled: true },
  { id: 3, name: "Steve", age: 30, gender: 'm', enabled: true },
  { id: 4, name: "Nancy", age: 42, gender: 'f', enabled: true },
  { id: 5, name: "Frank", age: 30, gender: 'm', enabled: true },
  { id: 6, name: "Larry", age: 68, gender: 'm', enabled: true }
];

// reject is similar to filter, but it will remove matches from the collection

var r = _.chain(people)
  .reject(function(p) { return p.age < 30; })
  .filter({gender: 'm'})
  .value();

console.log(r);  

var string = 'asdfasdfasdfasdfasdfasdef';

var x = _(string)
      .reject(function(l) { return l === 'a'; })
      .join('');

console.log(x);