contains (method)

contains

• contains(x): boolean

• Compares inner value with given value using ===. Always false for None.

  some(1).contains(1) // true
  some(0).contains(1) // false
  none.contains(undefined) // false
  

  Similar to JavaScript Array#includes method.

  Parameters

  • x: T

  Returns boolean

  See

  • contains
  • Opt.elemOfIn