In this job, we valid lambda expressions in LISP programming language. Developed with PLY
Developed with Tkinter
In the project folder
python main.py
(lambda (arg-variables...) [documentation-string] body-forms...)
The first element of a lambda expression is always the symbol lambda. This indicates that the list represents a function. The reason functions are defined to start with lambda is so that other lists, intended for other uses, will not accidentally be valid as functions.
The second element is a list of symbols—the argument variable names. This is called the lambda list.
The documentation string is a Lisp string object placed within the function definition to describe the function for the Emacs help facilities.
The rest of the elements are the body of the function: the Lisp code to do the work of the function. Structure
| Example | Return |
|---|---|
| (lambda (x) (* x 5)) | CORRECT |
| (lambda (x) (+ x 5 8 5)) | CORRECT |
| (lambda (x &optional y) (+ x y)) | CORRECT |
| (lambda (x &optional y z) (/ x y z)) | CORRECT |
| (lambda (x &optional y &optional z) (/ x y z)) | INCORRECT |
| (lambda (x &optional y &rest z) (/ x y z)) | CORRECT |
| (lambda (x &optional y &rest z) (* (+ x 5) 5)) | CORRECT |
| (lambda (x) (* (+ (+ x 5) 5) 5 6 6 5)) | CORRECT |
| (lambda (x &rest y) (* (exp (+ x 5) 5))) | CORRECT |
| (lambda (&optional y) (if (y) (write y) (exp 2))) | CORRECT |
- Geancarlo Murillo
- Daniel Saigua
- Tai Yu Chen