Aaron Feng comments

"Lisp ninja 2 - Refactoring" by Leslie P. Polzer

Thu, 03 Jul 2008 09:07:28 -0400

And here's another take on PARSE-PHP-ARRAY using LOOP:

(defun parse-php-array (array)
  (loop for value in (mapcar #'get-array-value
                            (split-sequence #\Newline array))
        collect value into values
        finally (return (nreverse values))))

I'm not sure why you want to reverse the values at the end, but here it is.

"Lisp ninja 2 - Refactoring" by Leslie P. Polzer

Thu, 03 Jul 2008 08:59:36 -0400

Wow, lots of spam here. Maybe you should turn on comment approval or some sort of CAPTCHA...

Anyway, here's my Shinobi take of GET-FUNCTION-SIGNATURE:

(defun get-function-signature (function-info)
  (let ((name (first function-info))
        (parameters (rest function-info)))
    (format nil "~A(~{~A~^, ~})" name (mapcar #'quote-string parameters))))

"Closure Fun" by Leslie P. Polzer

Thu, 03 Jul 2008 05:49:49 -0400

This generator pattern is very common in C, and PHP borrows a lot from C (see strtok(3) for the C interface of this function). Python guys like to do stuff like this, too.

How it works: the binding to REST is established on execution of the code once (and initialized to NIL). After that, the content of the variable is maintained by the code that is executed in the function body.

Note that this implementation of strtok isn't thread-safe. Multiple threads will share REST among them.

By the way, you can also just write

(let (rest) ...

if you want.

"Lisp ninja" by Aaron Feng

Wed, 30 Apr 2008 06:35:08 -0400

Leslie,

Did you know that this little gadget by Xach uses Lisp to generate PHP?

No, sounds pretty interesting.

"Lisp ninja" by Aaron Feng

Wed, 30 Apr 2008 06:30:54 -0400

Jonathan,

With slight modification to get-result-for-test-case, it can be generalized for any PHP function

I also thought about it too. I'm not sure if the super generic version will out weight the ability to allow Lisp to do error checking for you? But this should be interesting.

"Lisp ninja" by Aaron Feng

Wed, 30 Apr 2008 06:27:38 -0400

Kyle,

Why did you use prog2 in create-test-cases?

Good question. I originally wanted to return the second form because I added deftestsuite to create-test-cases. Since there are no side effects, it doesn't actually matter.

"Lisp ninja" by Leslie P. Polzer

Wed, 30 Apr 2008 01:44:04 -0400

Did you know that this little gadget by Xach uses Lisp to generate PHP?

"Lisp ninja" by Jonathan T

Wed, 30 Apr 2008 01:04:34 -0400

Why stop there?

With slight modification to get-result-for-test-case, it can be generalized for any PHP function, not just wordwrap, which is especially easy when the Lisp function and the PHP function have the same name.

"Lisp ninja" by Kyle

Wed, 30 Apr 2008 00:06:31 -0400

It's not just that it's less typing - you're less likely to make mistakes (reducing the LOC), you're more easily able to see the test case data itself (it's all lined up). You've created a mini-DSL for testing your code.

I was on the fence about whether to one-time generate the test cases (and thus not require an installation of php to run them), have the php output be created at compile time (macro expansion time) or leave it up till the time the test case is run. I guess there are a lot of ways this could have gone...

Why did you use prog2 in create-test-cases?

"Lisp newbie jump start" by Todd

Thu, 10 Apr 2008 15:46:06 -0400

"...there are many interesting concepts/features that can impact one's thinking even when they are not using Lisp."

That's why they still teach it in school, even after all these years.