[Verse 1] When you write the same code again and again Different types but the logic's the same There's a better way to make it all flow Let generics help your functions grow Angle brackets hold the magic key Type T will set your code free [Chorus] Generic functions, generic structs One size fits all when your code constructs T for type, it's the placeholder way Write once, use many, that's how we play Generic functions, generic structs Flexible code that never gets stuck [Verse 2] Instead of writing add for every kind i32, f64, blowing your mind Write one function with a T inside Let the compiler be your faithful guide When you call it, Rust will figure out What type you mean without a doubt [Chorus] Generic functions, generic structs One size fits all when your code constructs T for type, it's the placeholder way Write once, use many, that's how we play Generic functions, generic structs Flexible code that never gets stuck [Bridge] Constraints with traits keep things in line Not every type will work just fine Where T colon Display makes it clear Only types that print can appear here Bounds are the rules that generics obey Keeping your code safe every day [Verse 3] Vector of strings or vector of numbers Generic collections, no more blunders Option of int or Option of text Same enum pattern, what type comes next HashMap, Result, they all use the same Generic power in Rust's type game [Chorus] Generic functions, generic structs One size fits all when your code constructs T for type, it's the placeholder way Write once, use many, that's how we play Generic functions, generic structs Flexible code that never gets stuck [Outro] So when you see those angle brackets shine Know that generics save you time T and U and lifetimes too Generic Rust is there for you Write it once and use it wide Generics are your coding pride
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