From 20aff345391c6ae2d00a55c586fda31f6f4315d5 Mon Sep 17 00:00:00 2001
From: Neil Smith <neil.git@njae.me.uk>
Date: Sun, 27 Mar 2016 13:25:55 +0100
Subject: [PATCH] Added cat commands to slides

---
 slides/caesar-encipher.html | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/slides/caesar-encipher.html b/slides/caesar-encipher.html
index 4afd78d..279c2bd 100644
--- a/slides/caesar-encipher.html
+++ b/slides/caesar-encipher.html
@@ -90,7 +90,7 @@ Before doing anything, create a new branch in Git
 
 Experiment in IPython (ephemeral, for us)
 
-Once you've got something working, copy the code into a `.py` file (permanent and reusable)
+Once you've got something working, export the code into a `.py` file (permanent and reusable)
 
 ```python
 from imp import reload
@@ -224,6 +224,15 @@ ciphertext = [caesar_encipher_letter(p, key) for p in plaintext]
 ''.join()
 ```
 
+You'll be doing this a lot, so define a couple of utility functions:
+
+```python
+cat = ''.join
+wcat = ' '.join
+```
+
+`cat` after the Unix command (_concatenate_ files), `wcat` for _word concatenate_.
+
     </textarea>
     <script src="http://gnab.github.io/remark/downloads/remark-0.6.0.min.js" type="text/javascript">
     </script>
-- 
2.34.1