SwiftでObjective-Cの[NSarray removeObject:]てきなやつをする

Array+App.swift

extension Array {
  mutating func removeObject<E: Equatable>(object: E) -> Array {
    for var i = 0; i < self.count; i++ {
      if self[i] as E == object {
        self.removeAtIndex(i)
        break
      }
    }
    return self
  }
}