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Regular Expressions
Getting started with Regular Expressions
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Anchor Characters: Caret (^)
Anchor Characters: Dollar ($)
Atomic Grouping
Back reference
Backtracking
Capture Groups
Character classes
Escaping
Greedy and Lazy quantifiers
Lookahead and Lookbehind
Match Reset: \K
Matching Simple Patterns
Named capture groups
Password validation regex
Possessive Quantifiers
Recursion
Regex modifiers (flags)
Regex Pitfalls
Regular Expression Engine Types
Substitutions with Regular Expressions
Useful Regex Showcase
UTF-8 matchers: Letters, Marks, Punctuation etc.
When you should NOT use Regular Expressions
Word Boundary
Find patterns at the beginning or end of a word
Make text shorter but don't break last word
Match complete word
Word boundaries
Regular Expressions
Getting started with Regular Expressions
Awesome Book
Awesome Community
Awesome Course
Awesome Tutorial
Awesome YouTube
Anchor Characters: Caret (^)
Anchor Characters: Dollar ($)
Atomic Grouping
Back reference
Backtracking
Capture Groups
Character classes
Escaping
Greedy and Lazy quantifiers
Lookahead and Lookbehind
Match Reset: \K
Matching Simple Patterns
Named capture groups
Password validation regex
Possessive Quantifiers
Recursion
Regex modifiers (flags)
Regex Pitfalls
Regular Expression Engine Types
Substitutions with Regular Expressions
Useful Regex Showcase
UTF-8 matchers: Letters, Marks, Punctuation etc.
When you should NOT use Regular Expressions
Word Boundary
Find patterns at the beginning or end of a word
Make text shorter but don't break last word
Match complete word
Word boundaries
Regular Expressions
Word Boundary
Fastest Entity Framework Extensions
Bulk Insert
Bulk Delete
Bulk Update
Bulk Merge
Syntax
POSIX style, end of word:
[[:>:]]
POSIX style, start of word:
[[:<:]]
POSIX style, word boundary:
[[:<:][:>:]]
SVR4/GNU, end of word:
\>
SVR4/GNU, start of word:
\<
Perl/GNU, word boundary:
\b
Tcl, end of word:
\M
Tcl, start of word:
\m
Tcl, word boundary:
\y
Portable ERE, start of word:
(^|[^[:alnum:]_])
Portable ERE, end of word:
([^[:alnum:]_]|$)
Remarks
Additional Resources
POSIX chapter on regular expressions
Perl regular expression documentation
Tcl re_syntax manual page
GNU grep backslash expressions
BSD re_format
More reading
Word Boundary Related Examples
Find patterns at the beginning or end of a word
Make text shorter but don't break last word
Match complete word
Word boundaries
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