Lambda

lex.go

@@ -49,6 +49,7 @@ var (
 	Newline     = &Token{value: "\n"}
 	SingleQuote = &Token{value: "'"}
 	Let         = &Token{value: "let"}
+	LambdaTok   = &Token{value: "lambda"}
 )
 
 func (t Token) String() string {
@@ -71,6 +72,7 @@ var knownTokens = []*Token{
 	Newline,
 	SingleQuote,
 	Let,
+	LambdaTok,
 }
 
 func (t *Token) Equals(a Lexeme) bool {