surrounded by regex

surround a string by $$ chards

笔试字符串检查regex

Alpha Numeric with International characters with space This matches any letter, number, or space in most languages. [...] -> Match with conditions [a|b] -> Match 'a' OR 'b'...

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

Haiz

Variable Variance Formula This is parsing an Alteryx variance formula to show the versatility of re-writing expressions on the fly in your programs for dynamic repeatability, i.e. field names don't matter, and you never have to re-write the same variance formula again!