pattern-matching

Ruby's regex engine provides powerful text processing. I use =~ for matching, match for captures. Character classes \d, \w, \s match digits, words, whitespace. Quantifiers *, +, ?, {n,m} control repetition. Anchors ^ and $ match start/end. Groups () c

Rust's match expression is like a switch statement on steroids. It requires exhaustive handling of all cases, and the compiler enforces this. You can match on enums, tuples, references, ranges, and destructure nested data. Guards (if condition) add ex