Complete Regular Expressions Bootcamp - Go from Zero to Hero

Learn how metacharacters and other special characters control regex matching, distinguishing literal text from patterns, with examples using period, question mark, and parentheses.

Learn how the dot character acts as a wildcard in regular expressions, matching any character except a newline, and how escaping it matches literals in file extensions.

Explore negating a character set with a caret after the opening square bracket to match any character not in the set, including 0-9 ranges.

Explore how metacharacters inside a character set alter literal matches in regular expressions. Learn to escape hyphen, backslash, and closing square bracket, and control their meaning by position.

Learn shorthand character classes such as digits, whitespace, and word characters using backslash notations like d, D, s, S, w, and W to match or negate these sets.

Explore anchors in regular expressions, using the caret for the start of a line, the dollar sign for the end, and multiline mode to match boundaries within text.

Explore groups in regular expressions, using opening and closing parentheses to capture and quantify subpatterns, apply alternation, and reference grouped matches with backreferences like \1 and \2.

Master alternation in regular expressions by using the vertical bar to choose between patterns, forming groups and character classes, and matching domain names like dot com or dot net.

Learn to build regex ranges for 1 to 12 and 0 to 16 using square brackets, grouping, alternation, adapt to 0 to 12, 1 to 16, or 0 to 15.

Construct a regex to match 1 to 31 by three parts—1–9, 10–29, and 30–31—using character classes and ranges. Apply this pattern to validate day ranges in calendars.

Analyze date formats and craft a complete regular expression by dividing data into columns, applying quantifiers, character classes, and escaping to match days.