in Source/Charts/Data/Interfaces/ChartDataSetProtocol.swift [141:170]
func removeEntry(x: Double) -> Bool
/// Removes the first Entry (at index 0) of this DataSet from the entries array.
///
/// *optional feature, can return `false` ifnot implemented*
///
/// - Returns: `true` if the entry was removed successfully, `false` ifthe entry does not exist or if this feature is not supported
func removeFirst() -> Bool
/// Removes the last Entry (at index 0) of this DataSet from the entries array.
///
/// *optional feature, can return `false` ifnot implemented*
///
/// - Returns: `true` if the entry was removed successfully, `false` ifthe entry does not exist or if this feature is not supported
func removeLast() -> Bool
/// Checks if this DataSet contains the specified Entry.
///
/// - Returns: `true` if contains the entry, `false` ifnot.
func contains(_ e: ChartDataEntry) -> Bool
/// Removes all values from this DataSet and does all necessary recalculations.
///
/// *optional feature, could throw if not implemented*
func clear()
// MARK: - Styling functions and accessors
/// The label string that describes the DataSet.
var label: String? { get }