avega elevate 2011 - regex av staffan nöteberg

© blog.staffannoteberg.com (1)Regex Habits

Regex


Staffan Nöteberg


Pomodoro-kurs 7 september


Two-up


Glob


Origin


Functions


Directed Graph (nondeterministic)


Alphabet


States


Transition Table


Nondeterministic Finite Automata (NFA)


Directed Graph (DFA/NFA)


Deterministic Finite Automata (DFA)


Regular Expressions


Architecture


Matching One Character


Operator #1: Concatenation


Operator #2: Kleene Star


Operator #3: Alternation


Parentheses


Quiz #2

saippuakivikauppias


Finite


Regular Regex?


Greedy (Kleene Star)


Backtracking (NFA)


Leftmost (NFA Alternation)


Dialects


Regex Literal


Applications


Architecture


Regex Objects


Match Object


Quantifiers


Quiz #3

(0|1|2)(0|1|2|3|4|5|6|7|8|9){2}


Quantifier algebra


Positive Closure over Closure


Character Class


Quiz #4

[a-z0-9._-]+@[a-z0-9.-]+\.[a-z]{2,6}


Quiz #5

25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9]


Metacharacters – shorthands


Quiz #6

1(0|1)\d{3}


Quiz #7

(((00|\+)46|0)8)?\d{5,8}


Metacharacters – dot


Economical use of Dot


Quiz #8

.+@.+


Metacharacters – Unicode


Quiz #9

\d+(,\d\d)?\s?\u20AC


Assertions – Anchor


Quiz #10

^\s+

\s+$


Assertions – Lookaround


Quiz #11

^(?=.*\d)(?=.*([a-zA-Z])).{8,40}$


Mode


Capture and Backreference


Quiz #12

<(\w+)[^>]*>[^<]*</\1>


Staffan Nöteberg

Book:Pomodoro Technique Illustratedwww.pomodoro-book.com

Twitter: staffannoteberghttp://blog.staffannoteberg.com

avega elevate 2011 - regex av staffan nöteberg

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