A positive lookbehind assertion asserts true if the pattern inside the lookbehind is matched.
Here is its syntax:
(?<=...)
For example, (?<=##)d+ asserts that there must be a ## string just before matching one or more digits.
A positive lookbehind assertion asserts true if the pattern inside the lookbehind is matched.
Here is its syntax:
(?<=...)
For example, (?<=##)d+ asserts that there must be a ## string just before matching one or more digits.
18.191.181.144