| static LANGUAGE: &'static str = "Rust"; |
| static THRESHOLD: int = 10; |
| |
| fn is_big(n: int) -> bool { |
| // Access constant in some function |
| n > THRESHOLD |
| } |
| |
| fn main() { |
| let n = 16; |
| |
| // Access constant in the main task |
| println!("This is {}", LANGUAGE); |
| println!("The threshold is {}", THRESHOLD); |
| println!("{} is {}", n, if is_big(n) { "big" } else { "small" }); |
| |
| // Error! Cannot modify a static item |
| THRESHOLD = 5; |
| // FIXME ^ Comment out this line |
| |
| { |
| // String literals are references to read-only memory |
| let _static_string: &'static str = "In read-only memory"; |
| |
| // When `_static_string` goes out of scope, we can no longer refer to |
| // the underlying data, but the string remains in the read-only memory |
| } |
| } |
