Rust Result With Lifetime. Im going to return a borrow to an object that lives as long as the lifetime a Rust is happy with this definition and lets our code compile. I have a working iterator-mapper constructed with a basic ownership model.
For the moment Rust supports Lifetime Elisions only on fn definitions. Dont assume me as an expert of lifetime even though I deciced to write this article I feel I still dont get the concept. Youll probably see it first when dealing.
Print the numbers on each line of a string multiplied by two.
Each of the types in that line should read a reference with lifetime a to a string. Im not sure if I answered your question. The lifetime annotation a is now a template of the function. Im going to return a borrow to an object that lives as long as the lifetime a Rust is happy with this definition and lets our code compile.