Beginning Rust: From Novice to Professional

© Carlo Milanesi 2018

Carlo MilanesiBeginning Rusthttps://doi.org/10.1007/978-1-4842-3468-6_14

14. Using Changeable Strings

Carlo Milanesi¹ 

(1)

Bergamo, Italy

 

In this chapter, you will learn:

• How static strings are implemented

• How dynamic strings are implemented

• How you can add characters to or remove characters from a dynamic string

• How to convert a static string to a dynamic string, and conversely

• How to concatenate strings

Static Strings

Are the strings that we have used so far changeable?

They may be mutable and so, in a sense, we can change them:

let mut a = "Hel";

print!("{}", a);

a = "lo";

print!("{}", a);

This will print "Hello". But in what sense did we change it? We changed abruptly all the content of the string, not just some characters. In ...