A Rust crate for providing helpful methods in online judging.
```rust
fn main() { println!("Hello, World!"); } ```
print!, println!This crate provides print! and println! macros that shadow the prelude versions. These versions are about 10 times faster and fully API compatible, but sacrifice thread safety.
```rust
fn main() { print!("Hello, "); println!("World!"); } ```
flush!Flushes the stdout buffer.
```rust
use std::thread; use std::time::Duration;
fn main() { print!("Hello,"); flush!(); thread::sleep(Duration::from_secs(2)); println!(" World!"); } ```
scan!rust
scan!(T) -> T;
scan!(T1, ..., Tn) -> (T1, ..., Tn);
A macro for scanning values from stdin. Currently, only scanning integers is supported. Note that the scanner will continue to read stdin until it finds something that looks like an integer. If the macro is called with multiple type arguments a tuple of the values will be returned, otherwise the value itself is returned.
```rust
fn main() { // For example, if stdin contains " 2020 \n +4 test \n -19" then
print!("{:?}", scan!(u64)); // prints "2020", and
print!("{:?}", scan!(i16, i16)); // prints "(4, -19)"
} ```