mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-11 08:05:12 +00:00
40 lines
1.3 KiB
Rust
40 lines
1.3 KiB
Rust
|
|
|
|
#![warn(print_literal)]
|
|
|
|
fn main() {
|
|
// these should be fine
|
|
print!("Hello");
|
|
println!("Hello");
|
|
let world = "world";
|
|
println!("Hello {}", world);
|
|
println!("3 in hex is {:X}", 3);
|
|
println!("2 + 1 = {:.4}", 3);
|
|
println!("2 + 1 = {:5.4}", 3);
|
|
println!("Debug test {:?}", "hello, world");
|
|
println!("{0:8} {1:>8}", "hello", "world");
|
|
println!("{1:8} {0:>8}", "hello", "world");
|
|
println!("{foo:8} {bar:>8}", foo="hello", bar="world");
|
|
println!("{bar:8} {foo:>8}", foo="hello", bar="world");
|
|
println!("{number:>width$}", number=1, width=6);
|
|
println!("{number:>0width$}", number=1, width=6);
|
|
|
|
// these should throw warnings
|
|
println!("{} of {:b} people know binary, the other half doesn't", 1, 2);
|
|
print!("Hello {}", "world");
|
|
println!("Hello {} {}", world, "world");
|
|
println!("Hello {}", "world");
|
|
println!("10 / 4 is {}", 2.5);
|
|
println!("2 + 1 = {}", 3);
|
|
|
|
// positional args don't change the fact
|
|
// that we're using a literal -- this should
|
|
// throw a warning
|
|
println!("{0} {1}", "hello", "world");
|
|
println!("{1} {0}", "hello", "world");
|
|
|
|
// named args shouldn't change anything either
|
|
println!("{foo} {bar}", foo="hello", bar="world");
|
|
println!("{bar} {foo}", foo="hello", bar="world");
|
|
}
|