rustHow do I use a String Buffer in Rust?
String Buffer is a type of data structure used to store and manipulate strings in Rust. It is similar to a vector, but instead of storing elements of any type, it stores characters.
Example code
let mut s = String::new();
let mut s_buf = String::with_capacity(10);
s_buf.push_str("Hello");
s_buf.push(' ');
s_buf.push_str("World!");
s.push_str(&s_buf);
println!("{}", s);
Output example
Hello World!
Code explanation
let mut s = String::new();
: creates a new empty stringlet mut s_buf = String::with_capacity(10);
: creates a new string buffer with capacity of 10s_buf.push_str("Hello");
: pushes the string "Hello" into the string buffers_buf.push(' ');
: pushes a single character ' ' into the string buffers_buf.push_str("World!");
: pushes the string "World!" into the string buffers.push_str(&s_buf);
: pushes the contents of the string buffer into the stringprintln!("{}", s);
: prints the contents of the string
Helpful links
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