| --- Log opened Sat Sep 17 00:00:27 2011 |
| 00:21 | | You're now known as TheWatcher[T-2] |
| 00:23 | | You're now known as TheWatcher[zZzZ] |
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| 03:28 | < Vornicus> | Reversible PRNG |
| 03:28 | < Vornicus> | Discuss. |
| 03:29 | < Vornicus> | ...LCG with a prime modulus is reversible. Discussion no longer necessary. |
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| 08:33 | <@Tarinaky> | Vornicus: Doesn't revsersible mean it's not pseudo-random? |
| 08:33 | <@Tarinaky> | Since you can work out what state the PRNG is in and therefor predict the rest of the series? |
| 08:33 | <@Tarinaky> | *therefore |
| 08:33 | <@Tarinaky> | Or am I missing something? |
| 08:34 | <@Tamber> | Surely it'd still be pseudo-random, just useless as a source of randomness, since it's predictable? It just pretends to be random! :p |
| 08:35 | <@Tarinaky> | Yes. But so is a function that returns the number '3' if you document it the right way :p |
| 08:36 | <@Tamber> | =p |
| 08:36 | <@Tarinaky> | It pretends to be random, but is completely useless as a source of randomness. :p |
| 08:41 | < Vornicus> | Tarinaky: The point of a PRNG is that it doesn't take external entropy and thus can (probably, eventually) be predicted. |
| 08:41 | < Vornicus> | That this can happen quickly with LCG hasn't stopped it from being used as the standard prng for many systems. |
| 08:43 | < Vornicus> | If you want a prng suitable for crypto, you get blum-blum-shub. |
| 08:44 | <@Tarinaky> | Oh I see. Yes. I have missed something. |
| 08:46 | < Vornicus> | Hm. Even weirder: indexable PRNG |
| 08:47 | <@Tarinaky> | Isn't that just hashing? :p |
| 08:48 | < Vornicus> | :P |
| 08:50 | <@Tarinaky> | I'm going to go get a shower and get up. Later. |
| 08:53 | | You're now known as TheWatcher |
| 08:57 | < Vornicus> | but yeah I guess that would be hashing. |
| 10:04 | | Vornicus is now known as Vornicus-Latens |
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| 10:38 | | * TheWatcher eyes emacs, wonders why (add-hook 'before-save-hook 'delete-trailing-whitespace) works fine on his installs, but not on the version on this centos box... surely before-save-hook wasn't added after 21.4.1 |
| 10:41 | | * Simon_Shine just started using emacs after ten years of vi. |
| 10:46 | | Kazriko [kaz@4CA975.462904.08E9A2.992A2D] has joined #code |
| 10:46 | < gnolam> | ... it's emacs |
| 10:49 | < gnolam> | FFS, it took until version 22 until you could set a "next buffer"/"previous buffer" key combo. :P |
| 10:57 | <@Simon_Shine> | I just bound C-k to delete-whole-line (vim: dd), and now I'm starting to miss delete-line (vim: d$) |
| 11:01 | <@TheWatcher> | Hah, before-save-hook was added in 22, it seems. |
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| 14:16 | < gnolam> | "worker [ID] did not accept message -1 (Connection refused) - kill it" |
| 14:16 | < gnolam> | I never realized Linux was that capitalist. :o |
| 14:17 | <@Tarinaky> | The proletariat is waging class war against the borgoise init. |
| 14:21 | < gnolam> | Worker threads of the world, unite! |
| 14:21 | <@Tarinaky> | :D |
| 14:21 | < gnolam> | A spectre is haunting Europe - the spectre of parallelism. |
| 14:23 | <@Simon_Shine> | Tarinaky, s/(?<=in)/ /; :P |
| 14:23 | <@Tarinaky> | Simon_Shine: ? |
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| 14:27 | <@Simon_Shine> | they're waging war *in it*, too! :) |
| 14:35 | | * gnolam waits for a PRAM to come rolling down the Odessa Steps. |
| 14:37 | < gnolam> | (Too obscure?) |
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| 15:49 | | Derakon[AFK] is now known as Derakon |
| 16:16 | <@TheWatcher> | Signs that you aren't joking about refactoring: http://pastebin.starforge.co.uk/479 |
| 16:17 | < Lingerance> | Wow |
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| 18:39 | <@ToxicFrog> | woooooo key repeat working |
| 18:39 | <@ToxicFrog> | mostly |
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| 19:40 | | * TheWatcher eyes the git stats for the system he's working on for work |
| 19:40 | <@TheWatcher> | 3047 working loc in 5 days |
| 19:40 | <@Simon_Shine> | I'm trying to use a State monad, and I'm trying to write a function that extracts the state of it. |
| 19:41 | <@Simon_Shine> | as I can see, it seems that the typeclass MonadState has, among others, get and set, that should do this. |
| 19:42 | <@Simon_Shine> | bbiab. |
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| 20:19 | <@Simon_Shine> | back |
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| --- Log closed Sun Sep 18 00:00:42 2011 |