qwutils (WIP)

use qwutils::*;

实现

Option {
    fn with(&self, |&T|->R) -> R; //short for as_ref().map()
    fn with_if(&self, &Option<U>, |&T,&U|->R) -> R;
    fn add/sub/mul/div_to(&self, &V);
}
bool {
    fn map(&self,||->R) -> R;
    //map_or, map_or_else also available
    fn option(&self) -> Option<()>;
    fn result(&self) -> Result<(),()>;
    //more bool impls: https://crates.io/crates/boolinator
}
Array/Tuple {
    [T; N]::to_tuple(self) -> (T, ...);
    (T, ...)::to_array(self) -> [T; N];
}
Vec {
    fn push_option(&mut self, o: Option<T>);
    fn grow_to_with(&mut self, len, ||->T);
    fn grow_to(&mut self, len, T) where T: Clone;
    fn grow_to_default(&mut self, len) where T: Default;
}
Result {
    fn expect_nodebug(&self, &str); //for T without Debug
    //expect_err, unwrap, unwrap_err also available
}
Range {
    fn len(&self) -> T where T: Sub<T>;
}

大多数函数都有 _mut 变体可用

特质

RefClonable

trait RefClonable {
    fn refc(&self) -> Self;
}

• 快速引用克隆
• 类似于 Clone
• 实现了 Rc/Arc
• refcounted.refc() 的行为类似于 Rc/Arc::clone(&refcounted)

ScopedAccess (WIP)

trait ScopedAccess {
    fn access(&self, |&T|->R) -> R;
    fn access_mut(&mut self, |&mut T|->R) -> R;
}

• 访问仅限作用域内的内部类型
• 实现了 RefCell, RwLock, Rc/Arc<RefCell/RwLock>, 引用, Box, ...

宏

static_stor

待办事项

函数

if_type (WIP)

pub fn if_type<T,Specific>(||->Specific) -> T;

• 如果 T 和 Specific 是同一类型（通过比较 TypeId），则调用给定的函数
• 两种类型都必须是静态已知的（T: 'static, Specific: 'static)