Same temperature measurement extraction example but this time using grouping such that we can choose only the positive measurements before September 10

Extracting temperature measurements from txt file

this will exclude particular phrase from a line. means it will match only those line which dont have those word

This regex takes a function declaration and transforms it to an arrow function. Replace: const $1 = $2 => $3;

this should cover all USA cities with special characters as per https://en.wikipedia.org/wiki/List_of_U.S._cities_with_diacritics

Wyciąga treść z nagłówków h2.

Persian Mobile Number Matching Iran's international phone code is +98 and sometimes people use 0098. All mobile numbers starts with 9 after the code. So this pattern matches exactly a sequence of characters which starts with one of +989, 0098 or 09 prefixes and total count of characters after thes...

lookahead