Question

我有一个问题，我需要考虑4种布尔值的可能选项的每种组合。 e.g。

我有4个布尔值，useFeatured，groupBy，orderBy＆amp;上升。可能的组合是..

featured.
featured & orderby.
featured & orderby & groupby.
featured & orderby & groupby & ascending.

featured & groupby.
featured & groupby & ascending.

featured & ascending
featured & ascedning & orderby

orderby
orderby & groupby
orderby & groupby & ascending

groupby
groupby & ascending

ascending
ascending & orderby

目前，我有一个巨大的if else else树，这些选项我觉得很难相信它是唯一的解决方案，但我无法想到其他任何事情。

这是if else树的链接。

if(featured){
if(orderby){
    if(groupby){
            if(ascedning){
                    //featured orderby groupby ascending
            }else{
                    //featured orderby groupby
            }
    }else{
            //featured orderby
    }
}else if(groupby){
    if(ascedning){
            //featured groupby ascending
    }else{
            //featured groupby
    }
}else if(ascending){
    if(orderby){
            //featured ascending orderby
    }else{
            //featured ascending
    }
}else{
    //featured
}
 }else if(orderby){
    if(groupby){
            if(ascending){
                    //orderby groupby ascending
            }else{
                    //orderby groupby
            }
    }
}else if(groupby){
    if(ascending){
            //groupby ascending
    }else{
            //groupvy
    }
 }else if(ascending){
    if(orderby){
            //ascending & orderby
    }else{
            //ascending
    }
 }else{
    //orderby
 }

如果混乱格式化，请使用Pastebin。 http://pastebin.com/ECgASU3C

任何人都可以采用更好的解决方案吗？请救救我！

Answer 1

你可以使用切换案例 ......但 if else 是更好的选择

替代解决方案if else else if else if else trees？

1 个答案: