StackOverflow RegEx, lower case letters and numbers, with exact length of 6 RegEx without boundary (1st try) [a-z0-9]{6} RegEx with boundary (solution) \b[a-z0-9]{6}\b

大部分应当匹配的数字都匹配上了。 第2个捕获组，即是内容（可能加的有单位，需要手动去除）

Matches in python valid urls (excludes some edge cases), but pretty good to verify an URL before scraping it

Regex from the Mail::RFC822::Address: regexp-based address validation Access here

for testing doc

This regex will only allow the Major.Minor.Patch pattern to pass.

To include all content checkers

db gr

Matches the video Id in Youtube URL.

a regex to find first letter of each word

From the following: Chr. Chr.I Chr.II Chr.III Chr.IIV...

test outlet id

Busca parrafos completos incluyendo nuevas lineas, los cuales terminan con un punto final

Match IPv4-CIDR (JavaScript)

matches quoted strings

Modified source from https://stackoverflow.com/a/64833638/1454045

A regex used to emulate the biblatex alphabetic citation key style in JabRef: https://discourse.jabref.org/t/use-field-markers-in-regex-for-citation-key-generator/3842

Aún está pendiente que detecte ciertas versiones, como cuando trae la fecha o el 32/64 bits, build X, entre otros ejemplos

working pattern for Issue packages

Match "I'm ##" or "I am ##"