Download - The Bastards Book of Regular Expressions

Recommendations

Info

Specific and limited repetition 53# Act I### Scene 1#### Soliloquy A#### Soliloquy B# Act 2### Scene 1### Scene 2#### Soliloquy A# Act 3### Scene 1Into# Act I## Scene 1### Soliloquy A### Soliloquy B# Act 2## Scene 1## Scene 2### Soliloquy A# Act 3## Scene 1AnswerFind ˆ#{2}Replace #What happens without the anchor?# Act I## Scene 1## Soliloquy A## Soliloquy B# Act 2## Scene 1## Scene 2## Soliloquy A# Act 3## Scne 1
Specific and limited repetition 54Cleaning messily-spaced dataSometimes you come across a text or PDF file that contains data that you want to put in aspreadsheet:Red Apples Green Oranges Blue Pears$10 $50 $100If you attempt to paste that into Excel, however, you end up with:The data is just a bunch of text crammed into a single Excel cellThat may look OK, but that’s not what we want. We want each datapoint to occupy its own cell,like so:Each datapoint is separated by a column in ExcelIn order for this to happen, Excel needs some help. We have to tell it that where there are threespaces or more that’s where a datapoint ends. The easiest way to do that is to replace those extraspaces with a symbol – i.e. a delimiter – that Excel will interpret as a column break.The most common symbol is a comma.consecutive spaces with a comma:Using the curly braces notation, we can replace theFind {3,}Replace ,Which converts the text to:
Page 1:
The Bastards Book ofRegular Express
Page 5 and 6:
CONTENTSOptionality and alternation
Page 7 and 8:
CONTENTSSwitching visualizations (T
Page 9 and 10: Regular Expressions are for Everyon
Page 11 and 12: Regular Expressions are for Everyon
Page 13 and 14: Getting Started6
Page 15 and 16: Finding a proper text editor 8Notep
Page 17 and 18: Finding a proper text editor 10Edit
Page 19 and 20: Finding a proper text editor 12Text
Page 21 and 22: Finding a proper text editor 14does
Page 23 and 24: Finding a proper text editor 16Yest
Page 25 and 26: Finding a proper text editor 18A do
Page 27 and 28: A better Find-and-Replace 20The lim
Page 29 and 30: A better Find-and-Replace 22Using R
Page 31 and 32: Your first regex 24helloThe Find-an
Page 33 and 34: Your first regex 26The regex syntax
Page 35 and 36: Your first regex 28Double-bounded
Page 37 and 38: Your first regex 30AnswerFind \bcat
Page 39 and 40: Removing emptinessIt’s funny how
Page 41 and 42: Removing emptiness 34Now let’s do
Page 43 and 44: Removing emptiness 36…as opposed
Page 45 and 46: Removing emptiness 38Replacement in
Page 47 and 48: Match one-or-more with the plus sig
Page 55 and 56: Match zero-or-more with the star si
Page 57 and 58: Specific and limited repetition 501
Page 59: Specific and limited repetition 52E
Page 63 and 64: Anchors: A way to trim emptinessIn
Page 65 and 66: Anchors: A way to trim emptiness 58
Page 71 and 72: Matching any letter, any number 64A
Page 73 and 74: Matching any letter, any number 66W
Page 75 and 76: Matching any letter, any number 68[
Page 77 and 78: Matching any letter, any number 70R
Page 79 and 80: Matching any letter, any number 72F
Page 81 and 82: Matching any letter, any number 74A
Page 83 and 84: Negative character sets 76$1,200.00
Page 85 and 86: Negative character sets 78\W+Exerci
Page 87 and 88: Capture, Reuse 80Find (ba)+Matches
Page 89 and 90: Capture, Reuse 82.- then the 1st ba
Page 91 and 92: Capture, Reuse 84In English We are
Page 93 and 94: Capture, Reuse 86ApplesOraclesOrang
Page 95 and 96: Capture, Reuse 8805-14-8912-03-9803
Page 97 and 98: Capture, Reuse 90Mary asked: "What
Page 99 and 100: Optionality and alternationThe two
Page 101 and 102: Optionality and alternation 94Answe
Page 103 and 104: Optionality and alternation 96Studi
Page 105 and 106: Optionality and alternation 98You m
Page 107 and 108: Laziness and greediness 100Being to
Page 109 and 110: Laziness and greediness 102Replace
Page 111 and 112:
Laziness and greediness 104With the
Page 113 and 114:
Lookarounds 106cat(?=s)- will match
Page 115 and 116:
Lookarounds 108`(?
Page 117 and 118:
Lookarounds 110ExerciseGiven the fo
Page 119 and 120:
Lookarounds 112City,CountryAlbuquer
Page 121 and 122:
Lookarounds 114Given this list of c
Page 123 and 124:
Lookarounds 116100,J.D. Salinger Av
Page 125 and 126:
Lookarounds 1186,300|Apples|New Yor
Page 127 and 128:
Lookarounds 120^(\d+) Record ID (\w
Page 129 and 130:
Lookarounds 122d. Remove all asides
Page 131 and 132:
From Data to HTML (TODO)This chapte
Page 133 and 134:
From Data to HTML (TODO) 126Turning
Page 135 and 136:
The ExercisesI’ve never been one
Page 137 and 138:
Data Cleaning with the Stars 130LOR
Page 139 and 140:
Data Cleaning with the Stars 132[GM
Page 141 and 142:
Finding needles in haystacks (TODO)
Page 143 and 144:
Changing phone format (TODO)Todo: T
Page 145 and 146:
Changing phone format (TODO) 138Exe
Page 147 and 148:
Changing phone format (TODO) 140Ans
Page 149 and 150:
Changing phone format (TODO) 142`1-
Page 151 and 152:
Changing phone format (TODO) 144(\d
Page 153 and 154:
Dating, Associated Press Style (TOD
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Sorting a police blotter 154Sloppy
Page 163 and 164:
Sorting a police blotter 156I used
Page 165 and 166:
Converting XML to tab-delimited dat
Page 167 and 168:
Converting XML to tab-delimited dat
Page 169 and 170:
Cleaning up Microsoft Word HTML(TOD
Page 171 and 172:
Cleaning up OCR Text (TODO)Image sc
Page 173 and 174:
Moving forwardThank you for taking
show all

Download - The Bastards Book of Regular Expressions

Create successful ePaper yourself

Delete template?

Save as template?