一、pod install 后 Char框架报错,解决方案(Type ‘ChartDataSet‘ does not conform to protocol ‘RangeReplaceableCollection)

错误提示：Type ‘ChartDataSet’ does not conform to protocol ‘RangeReplaceableCollection’
extension ChartDataSet: RangeReplaceableCollection方法添加代码

 public func replaceSubrange<C>(_ subrange: Swift.Range<Int>, with newElements: C) where C :
 Collection, ChartDataEntry == C.Element {
    }