From 8cf2288d2e15d43c1bc04d189d7ee2b97a7ad98c Mon Sep 17 00:00:00 2001
From: muflax <mail@muflax.com>
Date: Mon, 30 Apr 2012 00:42:19 +0200
Subject: [PATCH] range_math post

---
 content/references/personal.mkd      |  5 +++
 content/references/references.mkd    |  2 ++
 content/references/videos.mkd        |  1 +
 content_blog/software/index.mkd      |  6 ++++
 content_blog/software/range_math.mkd | 46 ++++++++++++++++++++++++++++
 5 files changed, 60 insertions(+)
 create mode 100644 content_blog/software/index.mkd
 create mode 100644 content_blog/software/range_math.mkd

diff --git a/content/references/personal.mkd b/content/references/personal.mkd
index 9c0ce04..6d165e7 100644
--- a/content/references/personal.mkd
+++ b/content/references/personal.mkd
@@ -17,6 +17,9 @@
 <!-- tweets -->
 [Twitter pali]: https://twitter.com/#!/muflax/status/66635052242567168
 
+<!-- comments -->
+[comment Church]: http://blog.muflax.com/jesus/self-baptism/#comment-513169408
+
 <!-- software -->
 [Config]: https://github.com/muflax/config
 [Github]: https://github.com/muflax/
@@ -29,3 +32,5 @@
 [fume]: https://github.com/muflax/fume
 [fumetrap]: https://github.com/muflax/fumetrap
 [github web history]: https://github.com/muflax/scripts/blob/master/google_web_history.rb
+[range_math]: https://github.com/muflax/range_math
+[avg_dmg]: https://github.com/muflax/scripts/blob/master/average_damage.rb
diff --git a/content/references/references.mkd b/content/references/references.mkd
index cb86a29..2da75e1 100644
--- a/content/references/references.mkd
+++ b/content/references/references.mkd
@@ -77,6 +77,8 @@
 [Ingram flame]: http://www.dharmaoverground.org/web/guest/discussion/-/message_boards/message/2880527
 [Rhetological Fallacies]: http://www.informationisbeautiful.net/visualizations/rhetological-fallacies/
 [Logical Fallacies Poster]: http://yourlogicalfallacyis.com/
+[SMBC skull-king]: http://www.smbc-comics.com/index.php?db=comics&id=2244#comic
+[Up and Down the Ladder of Abstraction]: http://worrydream.com/LadderOfAbstraction/
 
 <!-- LessWrong -->
 [LW bipolar]: http://lesswrong.com/lw/6nb/ego_syntonic_thoughts_and_values/4igy
diff --git a/content/references/videos.mkd b/content/references/videos.mkd
index 5410307..e73300b 100644
--- a/content/references/videos.mkd
+++ b/content/references/videos.mkd
@@ -42,3 +42,4 @@
 [Stanford Metaethics]: http://www.youtube.com/watch?v=kBdfcR-8hEY
 [Schopenhauer Lecture]: http://www.youtube.com/watch?feature=player_detailpage&v=aK4pR1Uatqw#t=1084s
 [Batmobile]: https://www.youtube.com/watch?v=BmjFni_WLrA
+[Lecher Bitch]: https://www.youtube.com/watch?v=H3_sBoCUlOo
diff --git a/content_blog/software/index.mkd b/content_blog/software/index.mkd
new file mode 100644
index 0000000..01a183d
--- /dev/null
+++ b/content_blog/software/index.mkd
@@ -0,0 +1,6 @@
+---
+title: Software
+is_category: true
+---
+
+<%= category :software %>
diff --git a/content_blog/software/range_math.mkd b/content_blog/software/range_math.mkd
new file mode 100644
index 0000000..b270637
--- /dev/null
+++ b/content_blog/software/range_math.mkd
@@ -0,0 +1,46 @@
+---
+title: Ruby Math with Ranges
+date: 2012-04-30
+techne: :done
+episteme: :believed
+---
+
+You're playing some D&D game, like you always do, and you find two weapons, the Sword of Burnination, 1d8+3 and 1d6 fire damage, and the [Axe of Castigation][Lecher Bitch], 2d6+3. And you're tired of doing this math in your head.
+
+So you write a Ruby gem to do it for you.
+
+First, you write a [simple gem][range_math] to do math with ranges. You wanted this since you read [Up and Down the Ladder of Abstraction][]. Now this works:
+
+~~~
+#!ruby
+(1..6) * 3      # => (3..18)
+(-5..3) + 7     # => (2..10)
+(1..3) + (2..4) # => (3..7)
+(4..12) / 2     # => (2.0..6.0)
+~~~
+
+You can do quick math in your irb sessions with ranges instead of numbers now. You're happy.
+
+You do a `gem install range_math` on any system, and put this in your `.zshrc`:
+
+~~~
+#!sh
+alias i="irb -rrange_math"
+~~~
+
+Then you write a [simple script][avg_dmg] to convert dice rolls into ranges, put it in your PATH and alias it like this:
+
+~~~
+#!sh
+alias avg="noglob average_damage.rb"
+~~~
+
+Now this works:
+
+~~~
+#!sh
+$ avg 1d8+3 + 1d6
+range: 5..17, average: 11.0
+~~~
+
+Suffering ends.