Download - The Bastards Book of Regular Expressions

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CONTENTSOptionality and alternation 92Alternation with the pipe character . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92Optionality with the question mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94Laziness and greediness 99Greediness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99Laziness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101Lookarounds 105Positive lookahead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105Negative lookahead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107Positive lookbehind . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107Negative lookbehind . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109The importance of zero-width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Regexes in Real Life 111Why learn Excel? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111The limits of Excel (todo) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111Delimitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111Mixed commas and other delimiters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117Dealing with text charts (todo) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119Completely unstructured text (todo) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119Moving in and out and into Excel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120From Data to HTML (TODO) 124Simple HTML tricks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124Tabular data to HTML tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127Mocking full web pages from data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127Visualizations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127The Exercises 128
Page 1: The Bastards Book ofRegular Express
Page 6 and 7: CONTENTSData Cleaning with the Star
Page 8 and 9: Regular Expressions are for Everyon
Page 10 and 11: Regular Expressions are for Everyon
Page 12 and 13: Release notes & changelog.Note: Thi
Page 14 and 15: Finding a proper text editorOne of
Page 16 and 17: Finding a proper text editor 9SciTE
Page 18 and 19: Finding a proper text editor 11Text
Page 20 and 21: Finding a proper text editor 13Subl
Page 22 and 23: Finding a proper text editor 15In R
Page 24 and 25: Finding a proper text editor 17Sele
Page 26 and 27: A better Find-and-ReplaceAs I said
Page 28 and 29: A better Find-and-Replace 21Using t
Page 30 and 31: Your first regexLet’s try writing
Page 32 and 33: Your first regex 251. Hit the Repla
Page 34 and 35: Your first regex 27Here’s what it
Page 36 and 37: Your first regex 29In this case, th
Page 38 and 39: Regex Fundamentals31
Page 40 and 41: Removing emptiness 33In Sublime Tex
Page 42 and 43: Removing emptiness 35Finding the
Page 44 and 45: Removing emptiness 37TextWranglerAn
Page 46 and 47: Removing emptiness 39Double newline
Page 48 and 49: Match one-or-more with the plus sig
Page 54 and 55:
Match zero-or-more with the star si
Page 56 and 57:
Specific and limited repetitionThe
Page 58 and 59:
Specific and limited repetition 519
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Specific and limited repetition 53#
Page 62 and 63:
Specific and limited repetition 55R
Page 64 and 65:
Anchors: A way to trim emptiness 57
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Page 68 and 69:
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Matching any letter, any numberOf c
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Matching any letter, any number 651
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Matching any letter, any number 67N
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Matching any letter, any number 69S
Page 78 and 79:
Matching any letter, any number 711
Page 80 and 81:
Matching any letter, any number 73E
Page 82 and 83:
Negative character setsNow that we
Page 84 and 85:
Negative character sets 77hey-do-yo
Page 86 and 87:
Capture, ReuseWe’ve learned how t
Page 88 and 89:
Capture, Reuse 81Parentheses for ca
Page 90 and 91:
Capture, Reuse 83Roosevelt, Frankli
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Capture, Reuse 85A backreference in
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Capture, Reuse 872002-11-202002-3-2
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Capture, Reuse 89"What in the world
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Capture, Reuse 91Replace \1 \3Note
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Optionality and alternation 93Match
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Optionality and alternation 95Answe
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Optionality and alternation 97they'
Page 106 and 107:
Laziness and greedinessIn this chap
Page 108 and 109:
Laziness and greediness 101Or it co
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Laziness and greediness 103AnswerFi
Page 112 and 113:
LookaroundsThis chapter covers a re
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Lookarounds 107Negative lookaheadA
Page 116 and 117:
Lookarounds 1093/12/20104/6/200111/
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Regexes in Real Life# From Text to
Page 120 and 121:
Lookarounds 113Selecting a delimite
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Lookarounds 1153. City: A combinati
Page 124 and 125:
Lookarounds 117Mixed commas and oth
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Lookarounds 119In English Replace a
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Lookarounds 121a. All lines that ar
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Lookarounds 123...Page 1 of 4FAA Co
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From Data to HTML (TODO) 125All whi
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From Data to HTML (TODO) 127Strippi
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Data Cleaning with the StarsAnyone
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Data Cleaning with the Stars 131The
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Finding needles in haystacks (TODO)
Page 142 and 143:
Finding needles in haystacks (TODO)
Page 144 and 145:
Changing phone format (TODO) 137555
Page 146 and 147:
Changing phone format (TODO) 139Ans
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Changing phone format (TODO) 141Rep
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Changing phone format (TODO) 143Rep
Page 152 and 153:
Ordering names and dates (TODO)One
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Dating, Associated Press Style (TOD
Page 156 and 157:
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Sorting a police blotterThe Colorad
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Sorting a police blotter 155Start l
Page 164 and 165:
Sorting a police blotter 157After y
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Converting XML to tab-delimited dat
Page 168 and 169:
Converting XML to tab-delimited dat
Page 170 and 171:
Switching visualizations (TODO)If v
Page 172 and 173:
Cheat Sheet165
Page 174:
Moving forward 167• Regular Expre
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