s matches the character s literally (case sensitive) 1st Capturing Group (\d) \d matches a digit (equivalent to [0-9]) Global pattern flags...

/ \).$ / gm \) matches the character ) literally (case sensitive) ...

for the Google interacting with the OS course final project on Coursera

This regular expression helps keeping the PHP documentation up to date by adding the @since tags in the doc block where there are none.

For Oracle DB, as it doesn't consider null != informed DATE, and considers null != null. For the WHERE clause. = 0 to get differences = 1 to get "sameness"...

Validate XML

s

this is for finding all of the "zoom" follow bots on twitch

Example of how to pull a particular piece of the URL

email address regex

日志解析

The capture group returns only a number with a dot if it has decimal digits, otherwise it is treated as an integer. 1.1 => 1.1 1\. => 1

Reference: https://stackoverflow.com/a/34669019/369727

https://stackoverflow.com/questions/27745/getting-parts-of-a-url-regex

about medicine

匹配小数位的整数，或者匹配整数

lookToo

Given a string, generate random alpha characters of a particular length

Json add q

Parse a filename into path, filename and extension (directory names are windows style, but changeable). Matches are accessible by name and number. This is dependent on PCRE compatibility. It uses (DEFINE) non-consuming group definitions and back references. The only good description of using thi...