Comments on: Euler #2 http://justrakudoit.wordpress.com/2010/06/24/euler-2/ I Never Metaop I Didn't Like Thu, 07 Mar 2013 12:58:07 +0000 hourly 1 http://wordpress.com/ By: Bryce http://justrakudoit.wordpress.com/2010/06/24/euler-2/#comment-2362 Fri, 06 Aug 2010 20:20:12 +0000 http://justrakudoit.wordpress.com/?p=96#comment-2362 Hey, Thanks for linkiing to my site on this.

Also, I really liked your solution to the problem in perl6. One of the best things about doing this blog series is getting to see everyone else’s solutions to these problems as well as their preferred languages. Its truly amazing what one can learn looking and studying other people’s code.

]]> By: Pm http://justrakudoit.wordpress.com/2010/06/24/euler-2/#comment-2133 Mon, 28 Jun 2010 17:36:43 +0000 http://justrakudoit.wordpress.com/?p=96#comment-2133 BTW, note that on the day after YAPC::NA the !% operator was changed to %%. :-)

Pm

]]> By: Aaron Sherman http://justrakudoit.wordpress.com/2010/06/24/euler-2/#comment-1749 Thu, 24 Jun 2010 20:58:45 +0000 http://justrakudoit.wordpress.com/?p=96#comment-1749 Minor nit: the puzzle as you quoted it asks for a solution using a variation sequence which begins with 1,2, not 1,1. Of course, since 1,2,*+*…$n and 1,1,*+*…$n only differ in their first term, and the puzzle only cares about even elements, you get the same answer in both cases.

Eddward: the series op is pretty straight forward. I find this particular example more easily understood as 1,1,{$^a + $^b} … * though I will admit that it’s a lot longer. Whatever-currying is just a bit too magical for me just yet, but I’m sure I’ll get used to it.

]]> By: Eddward http://justrakudoit.wordpress.com/2010/06/24/euler-2/#comment-1748 Thu, 24 Jun 2010 19:08:52 +0000 http://justrakudoit.wordpress.com/?p=96#comment-1748 OK. get it. there was one more feature at work than I thought. The whatever closure looked like a meta op on +. It will take me a while to get my head around the series operator.

Edd

]]> By: colomon http://justrakudoit.wordpress.com/2010/06/24/euler-2/#comment-1746 Thu, 24 Jun 2010 17:31:16 +0000 http://justrakudoit.wordpress.com/?p=96#comment-1746 It is much more generally useful — and the pieces of it even more so — but I just asked Larry, and he says that Fibonacci was one of the first usages he thought of. :)

The series operator (here and down a bit) is very useful in general. And the WhateverClosure trick that turns * + * into a anonymous sub is very handy. The combination can be very handy.

]]> By: Eddward http://justrakudoit.wordpress.com/2010/06/24/euler-2/#comment-1745 Thu, 24 Jun 2010 16:57:52 +0000 http://justrakudoit.wordpress.com/?p=96#comment-1745 I’ve been waiting for perl6 for a while and I’ve been playing with rakudo a bit lately. The (1,1, *+* .. *) thing is new to me. Was that invented specifically for fibonacci or does it have some other more practical use that’s eluding me?

Edd

]]> By: zloyrusskiy http://justrakudoit.wordpress.com/2010/06/24/euler-2/#comment-1743 Thu, 24 Jun 2010 12:55:25 +0000 http://justrakudoit.wordpress.com/?p=96#comment-1743 It’s wonderful! I really liked your solution!

]]>