Usernames with dots, dashes and underscores. Hostnames limited to 64 chars, dash disallowed at first char of domain segment, only one consecutive dash or dot, one-char domains possible, multi-subdomains, long TLDs.

Names that accept maximum of 1 hyphen or 1 Quote, does not allow white spaces, allows an unlimited length of name.

match of.open("test.txt");

match ofstream of("test.txt", ios_base::app); ofstream of("test.txt", ios_base::trunc); ofstream of("test.txt", ios_base::binary);

این عبارت منظم یک کلاس سی اس اس را پیدا می کند

Find if/while in JS code written in PCRE

Pulls data from the 3rd line of different columns of text.

Checks for password containing at least 1 Upper case, 1 lower case, 1 digit and 1 special character, all together with a length of at least 8. (This pattern allows any order of the requried elements, other than what was been distributed here before)

0111100 will be matched whereas 0111110 will not. Change \1{4} to max repeating count. For max 9 repeating -> \1{9}

Accepts Date or not applicable string.

Working on email link cleanup.