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/// # 恐慌
///
/// 1. 了解恐慌安全
/// 2. catch_unwind
///
/// Base usage: 使用catch_unwind
///
/// ```rust
/// use std::panic;
/// fn sum(a: i32, b: i32) -> i32{
///     a + b
/// }
/// fn main() {
///     let result = panic::catch_unwind(|| { println!("hello!"); });
///     assert!(result.is_ok());
///     let result = panic::catch_unwind(|| { panic!("oh no!"); });
///     assert!(result.is_err());
///    println!("{}", sum(1, 2));
/// }
/// ```
///
/// Base usage: 使用set_hook
///
/// ```rust
/// use std::panic;
/// fn sum(a: i32, b: i32) -> i32{
///     a + b
/// }
/// fn main() {
///     let result = panic::catch_unwind(|| { println!("hello!"); });
///     assert!(result.is_ok());
///     panic::set_hook(Box::new(|panic_info| {
///         if let Some(location) = panic_info.location() {
///             println!("panic occurred '{}' at {}",
///                 location.file(), location.line()
///             );
///        } else {
///             println!("can't get location information...");
///        }
///    }));
///    let result = panic::catch_unwind(|| { panic!("oh no!"); });
///    assert!(result.is_err());
///    println!("{}", sum(1, 2));
/// }
/// ```
pub fn panics(){
    unimplemented!();
}