matches most fully qualified domain addresses with ability to match sub-domains,

Expresión para controlar que la cadena es un número de hasta 8 dígitos con dos decimales, controla tb que el primer carácter no sea un 0

At least 1 uppercase letter At least 1 number At least 8 characters long

File name in c

This_Is_My_C_Public_Function

this_is_my_c_private_function

THIS_IS_MY_MICRO

Variable-Hungara

second match in the object

last sequence of numbers

last sequence of numbers either starting with pts Pts or Overall Score

Just a basic URL validation regular expression. Most recommend you use the URL input type in HTML5

Validate and extract #HEX, rgb() and rgba() values

to change include files to uppercase

Extract project_ids