 		}
 		return nil
 	}
-
+	
 	/// SwifterSwift: Last index of element in array.
 	///
 	/// - Parameter item: item to check.

		}
		return indexes
	}

	/// SwifterSwift: Remove all instances of an item from array.
	///
	/// - Parameter item: item to remove.
	public mutating func removeAll(_ item: Element) {
		self = self.filter { $0 != item }
	}

	/// SwifterSwift: Remove all duplicates from array.
	public mutating func removeDuplicates() {
		var result: [Element] = []
		for value in self {
			if result.contains(value) == false {
				result.append(value)
			}
		}
		self = result
	}

}

		}
		var found = true
		for element in elements {
			if !contains(element) {
				found = false
			}
		}
		return found
	}
	
	/// SwifterSwift: All indexes of specified item.
	///
	/// - Parameter item: item to check.
