comprog prefinal

is a character or a sequence of characters that represent a string or multiple strings.

They allow for quicker, easier searching, parsing, and replacing of characters in a string.

ensure that strings contain specific contents and are often used to check the correct email format (@ sign is included) on form validation

determines what the string should match against and specifies multiple values. This method allows much more flexibility in the code.

represents any character

represents any number of occurrences of the character preceding it

the string around matches of the given regular expression. It is used to specify where the operator wishes to split the string

contains two or more parts that can run concurrently. Multithreading allows tasks waiting for other resources to give way to other processing requests.

is the smallest unit of execution that the operating system can schedule

is a group of associated threads executed in the same shared environment