整整一天,我都在为一段我明天需要的视频的展示而苦苦挣扎。当我试图将该项目导出为AVI格式时,它会向我抛出一条错误消息,声明:
During export with an external codec, an error has occured. Please check and adjust the export settings...
我怎样才能克服这一切?
我正在尝试将中的IResult monad解构为几个片段。这是IResult
data IResult t r = Fail t [String] String
| Partial (t -> IResult t r)
| Done t r
这感觉应该是影响、“偏爱”和失败的组合。如果故障仅表示为Either ([String], String),则偏好可能是
data Partiality t a = Now a | Later (t -> Partiality t a)
instance Monad (Par