Supports the calculations of expressions and summaries on an IEnumerable object. See the InitSummaryLibrary and InitFunctionLibrary methods to see the code for adding support for specific summaries and functions. Summaries are aggregation calculations applied to IEnumerable lists (e.g, StdDev), and functions are calculation applied to singular objects, usually members of an IEnumerable list (e.g, Cos).
A wrapper class for an expression object added to an ExpressionHelper class.
Represents the expression error enumeration constants.