Lisp - Tilted Forum Project Discussion Community

kel · 01-15-2004, 07:40 PM

WHY WHY WHY?
Why create such a sadistic and evil language?
I am taking a course in AI and it is the language everything is done in. Look at this garbage!

Code:

(setq lista (cons 'a (cons 'b (cons 'c (cons 'd nil)))))

(setq listb (cons 'c (cons 'd (cons 'e (cons 'f nil)))))

(defun is_in (x y) (if(equalp y ()) () (if(equalp x (car y)) (car y) (is_in x (c
dr y)))))

(defun intersection (x y) (if (equalp x ()) () (if(not(equalp (is_in(car x) y) (
)) )  (cons (car x) (intersection (cdr x) y)) (intersection (cdr x) y) )))
(defun difference (x y) (if(equalp x ()) () (if(equalp (is_in (car x) y) ()) (co
ns (car x) (union (cdr x) y)) (union (cdr x) y)) ) )


(defun union (x y) (if(equalp y ()) () (if(equalp x ()) (cons (car y) (union(x (
cdr y) )) (if(equalp (car x) (is_in (car x) y)) (difference (cdr x) y ) (cons (c
ar x) (difference (cdr x) y)))))))

(defun subset (x y) (if(equalp x ()) '(y) (if(is_in (car x) y) (subset (cdr x) y
) () ) ))

(defun reverse (x) (if(equalp x ()) () (append (reverse (cdr x)) (list (car x) )
)))

(defun remove (x y) (if(equalp y ()) () (if(equalp x (car y)) (remove x (cdr y))
 (cons (car y) (remove x (cdr y))))))

(defun replaceall (x y z) (if(equalp (car z) ()) () (if (equalp x (car z)) (cons
 y (replaceall x y (cdr z))) (cons (car z) (replaceall x y (cdr z))))))

Is that not the ugliest thing you have every seen? It was easier to do it this way then to use the languages weird implementation of for loops.

And I still haven't gotten union to work.
Someone please explain it to me.

And does anyone know of a GUI editor that will work in OS X that can balance these blasted parens? Emacs is out because it is just to annoying to use.

juanvaldes · 01-15-2004, 07:46 PM

stay away from Scheme while your at it.

Check out SubEthaEdit, it has a lisp syntax package.

cheerios · 01-15-2004, 07:58 PM

there's also DRScheme for OS X... that's what i used... it's got syntax colors at least...

kel · 01-15-2004, 08:09 PM

Woo!
Thanks, I have been doing it in VI and it hasn't been fun. One click parentheses checking ;-)

Cheerios I can use Drscheme for another language theory course I am doing that is based in scheme, right now I have been using scheme48 + VI

pta200 · 01-16-2004, 02:27 PM

Scheme is very powerfull and a pretty cool language. Like anything just takes some time and practice. Think recursively!

ChipX86 · 01-17-2004, 12:00 AM

It looks less ugly when formatted better. Multi-line statements and smart indenting are your friends.

cheerios · 01-17-2004, 03:18 PM

welcome, I think kel

manalone · 01-17-2004, 06:17 PM

I really like lisp. It's cleverly built, particularly if you consider its age. you may wish to find a pretty-printer for it.

The main issue in lisp is that some of the stock functions are backwards wrt to other parameretisations, which is annoying.

HFrankenstein · 01-19-2004, 08:01 PM

A lot of people also don't like it 'cause it's so high-level. They feel dirty when they use it. *shrug* I like having someone else pick up my garbage, personally.

JimmyTheHutt · 01-20-2004, 08:27 PM

Quote:

Originally posted by pta200
Scheme is very powerfull and a pretty cool language. Like anything just takes some time and practice. Think recursively!

My Principles of Programming Languages teacher said that every time he made us do something in Scheme/Lisp that it wasn't meant to do. Like making it OO for one thing. Without using any of the stuff that other people created to do it. WIth in heritence. God I hate that language.

Veritas en Lux!
Jimmy The Hutt

mr_mcrafe · 01-20-2004, 09:40 PM

Taking a quick read through it, to me it looks pretty horrible, with brackets absolutely everywhere. Then again it looks like it's pretty strict and once you're used to it it could be great. It just doesn't look like any code I've seen before.

kel · 01-21-2004, 05:06 AM

Lisp is provably no more powerful then any other language...

JimmyTheHutt · 01-21-2004, 10:15 AM

Quote:

Originally posted by kel
Lisp is provably no more powerful then any other language...

But it does manage to be more annoying than any other language...

Veritas en Lux!
Jimmy The Hutt

cheerios · 01-21-2004, 04:31 PM

kel: when we're talking about powerful as in "things that can be accomplished" that's true. when we're talking EASE of accomplishment, and time it takes to do things, I might argue with you.

kel · 01-21-2004, 07:24 PM

Lisp qualifies as more powerful in ease of use in RARE situations that don't come up in the majority of applications. Pretty much any web related or OS programming is Lisp free. Even in mathematical data processing it is frequently easier to use a C style language.

Sure, you can make a few code examples that are shorter and cleaner in Lisp, but there is a reason Lisp is relegated to academics.

JimmyTheHutt · 01-21-2004, 09:01 PM

Quote:

Originally posted by kel
Sure, you can make a few code examples that are shorter and cleaner in Lisp, but there is a reason Lisp is relegated to academics.

So it can torture poor students.

Veritas en Lux!
Jimmy The Hutt

kel · 01-27-2004, 06:23 PM

Let me reiterate that I think Lisp represents everything you can do wrong with a programming language...

manalone · 02-07-2004, 04:52 AM

Quote:

Originally posted by kel
Let me reiterate that I think Lisp represents everything you can do wrong with a programming language...

really? worse than BASIC? death of a thousand young minds?

JimmyTheHutt · 02-07-2004, 09:00 AM

Quote:

Originally posted by manalone
really? worse than BASIC? death of a thousand young minds?

At least BASIC is semi-readable.

Veritas en Lux!
Jimmy The Hutt

CSflim · 02-12-2004, 02:00 PM

no dissing BASIC, you philistines!

froseph · 02-16-2004, 04:40 PM

lisp builds character.

kel · 04-21-2004, 05:18 PM

Man I wish I were working in scheme :-(
Partial order planning, yum yum.

01-15-2004, 08:09 PM	#4 (permalink)
kel WARNING: FLAMMABLE Location: Ask Acetylene	Woo! Thanks, I have been doing it in VI and it hasn't been fun. One click parentheses checking ;-) Cheerios I can use Drscheme for another language theory course I am doing that is based in scheme, right now I have been using scheme48 + VI __________________ "It better be funny"

01-17-2004, 06:17 PM	#8 (permalink)
manalone Once upon a time...	I really like lisp. It's cleverly built, particularly if you consider its age. you may wish to find a pretty-printer for it. The main issue in lisp is that some of the stock functions are backwards wrt to other parameretisations, which is annoying. __________________ -- Man Alone ======= Abstainer: a weak person who yields to the temptation of denying himself a pleasure. Ambrose Bierce, The Devil's Dictionary.

01-19-2004, 08:01 PM	#9 (permalink)
HFrankenstein Crazy Location: New Jersey / Delaware	A lot of people also don't like it 'cause it's so high-level. They feel dirty when they use it. shrug I like having someone else pick up my garbage, personally. __________________ When in doubt, sauerkraut.

01-21-2004, 05:06 AM	#12 (permalink)
kel WARNING: FLAMMABLE Location: Ask Acetylene	Lisp is provably no more powerful then any other language... __________________ "It better be funny"

01-21-2004, 07:24 PM	#15 (permalink)
kel WARNING: FLAMMABLE Location: Ask Acetylene	Lisp qualifies as more powerful in ease of use in RARE situations that don't come up in the majority of applications. Pretty much any web related or OS programming is Lisp free. Even in mathematical data processing it is frequently easier to use a C style language. Sure, you can make a few code examples that are shorter and cleaner in Lisp, but there is a reason Lisp is relegated to academics. __________________ "It better be funny" Last edited by kel; 01-21-2004 at 07:43 PM..

01-15-2004, 07:46 PM	#2 (permalink)
juanvaldes Banned Location: shittown, CA	stay away from Scheme while your at it. Check out SubEthaEdit, it has a lisp syntax package.

01-15-2004, 07:58 PM	#3 (permalink)
cheerios Banned Location: 'bout 2 feet from my iMac	there's also DRScheme for OS X... that's what i used... it's got syntax colors at least...

01-16-2004, 02:27 PM	#5 (permalink)
pta200 Insane	Scheme is very powerfull and a pretty cool language. Like anything just takes some time and practice. Think recursively!

01-17-2004, 12:00 AM	#6 (permalink)
ChipX86 Tilted	It looks less ugly when formatted better. Multi-line statements and smart indenting are your friends.

01-17-2004, 03:18 PM	#7 (permalink)
cheerios Banned Location: 'bout 2 feet from my iMac	welcome, I think kel

01-20-2004, 09:40 PM	#11 (permalink)
mr_mcrafe Banned Location: auckland, nz	Taking a quick read through it, to me it looks pretty horrible, with brackets absolutely everywhere. Then again it looks like it's pretty strict and once you're used to it it could be great. It just doesn't look like any code I've seen before.

01-21-2004, 04:31 PM	#14 (permalink)
cheerios Banned Location: 'bout 2 feet from my iMac	kel: when we're talking about powerful as in "things that can be accomplished" that's true. when we're talking EASE of accomplishment, and time it takes to do things, I might argue with you.

01-27-2004, 06:23 PM	#17 (permalink)
kel WARNING: FLAMMABLE Location: Ask Acetylene	Let me reiterate that I think Lisp represents everything you can do wrong with a programming language... __________________ "It better be funny"

02-12-2004, 02:00 PM	#20 (permalink)
CSflim Sky Piercer Location: Ireland	no dissing BASIC, you philistines! __________________

02-16-2004, 04:40 PM	#21 (permalink)
froseph Tilted	lisp builds character. __________________ sometimes it just takes a cat

04-21-2004, 05:18 PM	#22 (permalink)
kel WARNING: FLAMMABLE Location: Ask Acetylene	Man I wish I were working in scheme :-( Partial order planning, yum yum. __________________ "It better be funny"