Fully fledged lambdas, along with efficiency tweaks across the ast

Readme.org

@@ -152,7 +152,34 @@ CURRENT VALUE AND/OR BODY:
 #+END_SRC
 
 *** TODO Quote and Eval
-*** TODO Lambda
+*** Lambda
+Another form of homoiconicity is the *anonymous function*.
+This is a nameless function being passed around as data.
+It can be bound to a variable, or called directly.
+An *anonymous function* is created with the ~lambda~ function.
+
+Here is an example of a lambda function:
+#+BEGIN_SRC lisp
+  (lambda (x y) (add x y))
+  ;;       |     ^ this is the function body
+  ;;       +-> this is the argument list
+#+END_SRC
+
+The result of the lambda call is returned as a piece of data.
+It can later be called inline or bound to a variable.
+
+Here is an example of an inline lambda call:
+#+BEGIN_SRC lisp
+  ((lambda (x y) (add x y)) 1 2)
+#+END_SRC
+This call returns ~3~.
+
+Here is the lambda bound to a variable inside a let statement:
+#+BEGIN_SRC lisp
+  (let ((adder (lambda (x y) (add x y)))) ;; let form contains one local var
+            (adder 1 2))                  ;; local var (lambda) called here
+#+END_SRC
+
 *** TODO Defining variables and functions
 **** TODO Anatomy
 **** TODO Naming conventions
@@ -322,21 +349,6 @@ This contains any executable target of this project. Notably the main shell file
 Note: this section will not show the status of each item unless you are viewing it with a proper orgmode viewer.
 Note: this section only tracks the state of incomplete TODO items. Having everything on here would be cluttered.
 
-*** TODO Lambda
-IMPLEMENTATION:
-  - [-] implement a new Ctr type to encapsulate function and args
-  - [ ] need a new case in store for when bound to a var
-        (honestly store should be rewritten)
-  - [ ] need a case in eval that mirrors the function call case
-
-DOCUMENTATION:
-- [ ] let case for creating and applying a lambda
-
-TEST:
-- [ ] lambda to_string input equivalency
-- [ ] (eq? ((lambda (x y) (add x y)) 1 2) (add 1 2))
-- [ ] let case for creating and applying a lambda
-
 *** TODO list contains via circuit
 *** TODO Map function
 - DOCUMENTATION + TEST: