Evaluate a predication

A Predication is the strongly typed .NET API for an Expressif rule that returns a Boolean value.

Create it once, then evaluate each input with the same rule:

var predication = Predication.Create("lower-case");

bool first = predication.Evaluate("Nikola Tesla");
bool second = predication.Evaluate("nikola tesla");

first is false; second is true.

The added value over Expression.Create(...) is the return type:

object? expressionResult = Expression.Create("lower-case")
    .Evaluate("nikola tesla");

bool predicationResult = Predication.Create("lower-case")
    .Evaluate("nikola tesla");

Use Predication when the consuming C# code benefits from a guaranteed bool. Use Expression.Create(...) when the result may have another type or when one evaluation abstraction is more convenient across the application.

See Predicates for predicate parameters, negation, Boolean operators, and grouping syntax.