Arithmetica.Tokenization.Rewriting.WordRewriter.WordRewriter C# (CSharp) Method

        public WordRewriter()
        {
            // Declare all known constants.
            _constants = new Dictionary<string, double>(StringComparer.OrdinalIgnoreCase);
            _constants.Add("pi", Math.PI);
            _constants.Add("e", Math.E);
        }