Guys, I have a list and i want to drop the odd values out of it, any tips on how to do it?

@RM is a reddit machine :)

I know that there is that pattern stuff, but i still don't know how to use it.

@GustavoBandeira Hi there

@image_doctor Hello

@GustavoBandeira You mean something like this ...Select[Range@10, EvenQ]

Yes

@GustavoBandeira Does that solve your problem ?

Select[l1, OddQ]

This solved

Thank you

@GustavoBandeira - Excellent .. time for me to sleep now then :)

@Verbeia you asked and I delivered :) Approx 1600 new views for that one so far

@RM:4574988 chat.stackexchange.com/transcript/message/4562010#4562010

@belisarius I'll upvote if you mention python too in a postscript

@acl It's a deal! :D 10K views+1

reddit is fantastic

Quote: "I would say Python in better for classical mechanics, Mathematica is better for quantum mechanics."

great

I prefer Assembler for General Relativity

but Prolog could also do well

lowtechmagazine.com/2007/12/email-in-the-18.html

@belisarius that's classical mechanics; Python. I'd go for fortran when doing algebra, C for analysis

assembler for arithmetic

@acl If this were reddit I should say something like "You don't know what you're talking about" :D

I owe them 10K rep on SO ;)

@belisarius that's amazing

@acl It is not something to be proud of

no I'm talking about the lowtechmagazine article.

@acl Oh yeah, I found it yesterday. A great site!

@belisarius I knew there were such networks from antiquity, but hadn't realized they were that large

@acl The Chinese Wall was a 1000 Km/hour message system

They had 2 men outposts. One man "read" aloud the incoming message for the other to use flags to transmit it on the fly to the following "post office"

@RM where did you post it? I can't seem to find it.

@rcollyer Hi!

@belisarius Hi. Trying to watch the season finale of Fringe.

@belisarius apparently lots of ancient cultures converged to similar techniques (or so I read once somewhere). I was just surprised at the extend of the network described in the article

@rcollyer it's on programming.

@RM looking for it. Apparently, programming, then, is the better place to post things. Much higher traffic than mathematica.

@RM reddit is incredible, thanks. now I know what to do while qstat'ing every ten minutes, instead of eg working on my other projects

@rcollyer so you're aiming solely for the badge, eh? ;)

@RM and what if I am? Besides, I posted the ghost trails last night, and you've already gotten a silver off of the boggle question in the past six hours!

Correction: gold.

@rcollyer I plan well :)

@RM posting just before dinner time on the East coast?

aside:

independent.co.uk/arts-entertainment/tv/news/…

@acl well, that gets a star. The link, not what the link points to. :)

Night all.

night

@rcollyer the boggle didn't go well at first. Since the question + leonid's answer was mostly text + code, people didn't appreciate it. Also, I realized that "tries" (which I used in the title in the context of data structures), could've been misconstrued as "trying" different combinations, which makes it less attractive.

@acl careful, it can eat away your hours days! :)

@RM amazing place nonetheless

@rcollyer btw, you might also want to try r/animation for that one..

or r/motiondesign

@R.M you flagged for a tag merge, and mentioned 8 vs 2; where is this figure from?

Never mind, I realize you mean posts.

@Verbeia I think it can be a little bit of a scary place for some newbies :)

wolfram.com/training/special-event/…

@RM You must know some good marketing tricks. When others post on reddit, it doesn't bring nearly as many views

@Szabolcs Some familiar names amongst the speakers

@Heike Plus the manipulate screenshot on the right is Vitaliy's if I'm not mistaken

@Szabolcs Are you taking about this one?

Yes

kaurov.com/wordpress/?p=692

Looks pretty

I'm wondering if it's possible to somehow 'Block' system options. I'd like to block the TreatRepeatedEntries system option for sparse arrays.

I got the NCAlgebra package, and NCExpand is defined like this: NCExpand[x___]:=(NCExpand->ExpandNonCommutativeMultiply)[[2]][x] (according to Information).

@Szabolcs That's a curious way of defining a function.

They probably had a framework for defining aliases and this is what it did.

@Szabolcs looks like it

This is the line: Map[(#[[1]][x___] := #[[2]][x];)&,NCAliasRule]; NCAliasRules is simply a list of rules.

I'll write an email to the authors asking about it. Perhaps it's a good opportunity to invite them to Mathematica.SE.

The names are not familiar to me.

The visit count will probably drop significantly when the peak leaves the 2-week window: quantcast.com/mathematica.stackexchange.com

@Szabolcs It's the median that counts. Big peaks during days where the number of views would have been relatively high anyway aren't really noticeable when taking the median over two weeks.

so, any ideas what is going on here?

pseudo-fortran code!

@acl I edited it. I guess they just forgot to mention it was pseudocode

@RM I guess we'd need to edit the first solution as it currently contains a h(s,x)

@acl ah, missed that.

our edits overlapped...

Maybe JM should also post his solution to this question

@acl I undid mine, so you you can now edit it :)

@RM behold!