Mailis CalcOperator by: Mailis .NET Standard 1.4 This package targets .NET Standard 1.4. The package is compatible with this framework or higher. 1,512 total downloads last updated 12/26/2016 Latest version: 1.0.0 IgeneralOperator Ioperator TypeObserver Abstract classes for creating operators for calculator, where operators can be dynamically removed and uploaded.