Flee Supported Data Types

The primitive data types are predefined by the language, and they are named by reserved keywords. They represent the basic types of the language.

The Flee manages the following list of C# primary types.

• object
• string
• bool
• byte
• char
• decimal
• double
• short
• int
• long
• sbyte
• float
• ushort
• uint
• ulong
• void

You can add additional types by using the context.Imports.AddType method. The following example allows the expression to use all static public members of System.Math.

public static void Example1()
{
    ExpressionContext context = new ExpressionContext();
    context.Imports.AddType(typeof(Math));

    List<string> expressions = new List<string>()
    {
        "Pow(2, 3)",
        "Sqrt(81)",
        "Pi"
    };

    foreach (var expression in expressions)
    {
        IDynamicExpression eDynamic = context.CompileDynamic(expression);

        Object result = eDynamic.Evaluate();
        Console.WriteLine("{0} = {1}", expression, result);
    }
}

As you can see that we have used the Imports property to make all the static members of the System.Math class available to the expression.

Let's execute the above code, and you will see the following output.

Pow(2, 3) = 8
Sqrt(81) = 9
Pi = 3.141592653589793