Coding Patterns

"This is really only a proof-of-concept, of c...

2012-01-25T20:45:54.133-08:00

"This is really only a proof-of-concept, of course. You can't use Lisp in a real project because nobody knows Lisp. "

I know Lisp and use it on real projects.

(floor (fromIntegral n/2)) should be written as ...

2011-11-26T03:08:43.509-08:00

(floor (fromIntegral n/2))

should be written as

(n `div` 2)

Glad to find another Colemak user. I am learning C...

2010-12-10T01:36:03.767-08:00

Glad to find another Colemak user. I am learning Colemak for 3 days.

Unlearning Qwerty is a hard process. D and G, S and R is often mistaken :-)

But my hands don't hurt any more. They are just confused.

(Note, I'm using F[0] = 0, F[1] = 1, F[2] = 1,...

2010-02-09T21:12:38.193-08:00

(Note, I'm using F[0] = 0, F[1] = 1, F[2] = 1, F[3] = 2, ...
Thus indicies which are multiples of three give even Fibonacci numbers.)

By the recursion relation:
Sum[F[3*i],{i,0,n}] = Sum[F[3*i-1] + F[3*i-2],{i,1,n}] = Sum[F[i],{i,0,3*n}] / 2.

From the analytical form, F[n] = (phi^n - (-1/phi)^n)/sqrt(5), you can derive:
Sum[F[i],{i,0,n}] = F[n+2] - 1.

Then for large enough arguments, you can approximate F[n] as phi^n / sqrt(5):

phi = (1 + sqrt(5))/2
f = 4000000
n = floor(log(sqrt(5)*f)/log(phi))
n = n - n mod 3
ans = (floor(phi^(n+2) / sqrt(5) + 1/2) - 1) / 2

Anyway, thanks for the interesting post. I'm going to have to give Haskell a shot. Hope you have fun with Project Euler.

Thanks for writing up this nice little script, cha...

2009-01-27T01:50:00.000-08:00

Thanks for writing up this nice little script, chaining is what i liked the most in your code, this definitely makes dom building a nicer experience. But one thing which is bugging me is that, everytime I call the domBuilder method it loops through the autoTags[] array and creates those functions again and again, don't you think creating those functions each time should be avoided....one last thing that is can you please explain a little bit why did you store 'parent_el.document' in the 'document' property of 'that' object, it's not clear to me or may b I am missing something, but if I remove that line, I get an error. anyway thanks again for the effort....

Agreed! I have found this to the be case in my ex...

2008-04-20T21:23:00.000-07:00

Agreed! I have found this to the be case in my experience as well.

I've been getting some feedback that these links a...

2007-10-10T14:26:00.000-07:00

I've been getting some feedback that these links aren't working for everyone. I'll try to get that fixed. In the meantime, sorry!

Dan,Thanks for stopping by!

2007-10-09T17:02:00.000-07:00

Dan,
Thanks for stopping by!

Hi Gabe, looking forward to reading this blog.

2007-10-08T10:50:00.000-07:00

Hi Gabe, looking forward to reading this blog.

Test Comment

2007-10-03T09:04:00.000-07:00

Test Comment