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管道框架

pub async fn test() -> Result<bool, f32> {
    async fn always_true(_a : i32, _b : i32, _s : &str) -> bool {
        true
    }

    id::<i32>()
    .bind(20 as i32)
    .bind("hello")
    .aseq(always_true)
    .tuple()
    .seq(|b : bool| {
        Ok((!b,))
    })
    .map(|b:bool| {
        !b
    })
    .map_tuple()
    .map_bind("abc")
    .amap(|_b:bool, _s : &str| async {
        false
    })
    .map_tuple()
    .and_then(|_| {
        Err(1.1)
    })
    .run(12).await
}

待办事项

• 文档
• map_err
• or_* 方法
• iter_parallel, fold_parallel