# Nullability - Rust
```rust ,ignore
fn print(s: String) {
println!("{s}");
println!("{}", s.len());
}
```
```rust
# fn print(s: String) {
# println!("{s}");
# println!("{}", s.len());
# }
# fn main() {
print();
# }
```
```rust
# fn print(s: String) {
# println!("{s}");
# println!("{}", s.len());
# }
#
# fn main() {
print(None);
# }
```
```rust
# fn print(s: String) {
# println!("{s}");
# println!("{}", s.len());
# }
#
#
# fn main() {
print("hello".into());
# }
```
## Accepting "nothing"
```rust
fn print(s_opt: Option<String>) {
match s_opt {
None => println!("nothing!"),
Some(s) => {
println!("{s}");
println!("{}", s.len());
}
}
}
fn main() {
print(None);
print(Some("hello".into()));
}
```
