Tweaked slide layout

[cipher-training.git] / slides / caesar-encipher.html
diff --git a/slides/caesar-encipher.html b/slides/caesar-encipher.html

index f45a166ca80d71f37605364c4dac44c9e43925d1..4ef1d341125d73a444a6d2cbbc01a7e7dce08c7c 100644 (file)
--- a/slides/caesar-encipher.html
+++ b/slides/caesar-encipher.html
@@ -37,6 +37,11 @@
          text-shadow: 0 0 20px #333;
          padding: 2px 5px;
        }
+      .indexlink {
+        position: absolute;
+        bottom: 1em;
+        left: 1em;
+      }
      </style>
    </head>
    <body>
@@ -50,6 +55,12 @@ Letter-by-letter enciphering
  
  ---
  
+layout: true
+
+.indexlink[[Index](index.html)]
+
+---
+
  # Enciphering and deciphering
  
  ## Arithmetic on letters
@@ -120,49 +131,6 @@ if __name__ == "__main__":
  
  ---
  
-# Accents
-
-```python
->>> caesar_encipher_letter('é', 1)
-```
-What does it produce?
-
-What should it produce?
-
-## Unicode, combining codepoints, and normal forms
-
-Text encodings will bite you when you least expect it.
-
-* urlencoding is the other pain point.
-
----
-
-# Five minutes on StackOverflow later...
-
-```python
-def unaccent(text):
-    """Remove all accents from letters. 
-    It does this by converting the unicode string to decomposed compatibility
-    form, dropping all the combining accents, then re-encoding the bytes.
-
-    >>> unaccent('hello')
-    'hello'
-    >>> unaccent('HELLO')
-    'HELLO'
-    >>> unaccent('héllo')
-    'hello'
-    >>> unaccent('héllö')
-    'hello'
-    >>> unaccent('HÉLLÖ')
-    'HELLO'
-    """
-    return unicodedata.normalize('NFKD', text).\
-        encode('ascii', 'ignore').\
-        decode('utf-8')
-```
-
----
-
  # Doing all the letters
  
  ## Test-first developement