text: const R = require('../rambda')
  
  test('', () => {
    expect(R.contains(3)([ 1, 2, 3 ])).toBeTruthy()
    expect(R.contains(4, [ 1, 2, 3 ])).toBeFalsy()
    expect(R.contains([ 42 ], [ [ 42 ] ])).toBeTruthy()
  })
  