Regular Expressions 101

Community Patterns

1

json value extract

Java 8
json value extract
Submitted by anonymous - a year ago
1

html <Title>

Java 8
htnle
Submitted by erichologist - 7 months ago

Palindromes

2

Regular Expression
PCRE2 (PHP >=7.3)

/
(?(DEFINE) (?<palindrome> # Recursive alternative first to match recursive palindromes. # Invert alternatives order to match nested palindromes individually # and (drastically) reduce backtracking. (?<l1>\p{L})\p{M}* [\s\p{P}]* (?&palindrome) [\s\p{P}]* \k<l1>\p{M}* | (?<l2>\p{L})\p{M}* [\s\p{P}]* \k<l2>\p{M}* | \p{L}\p{M}* ) ) (?<=[\s\p{P}]|^) (?&palindrome) (?(?=\s*\p{P}) (?:\s*\p{P})+ | (?=\s|$))
/
gix

Description

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Submitted by NicolaF_ - a year ago
(Last modified a year ago)