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我有一个问题,我需要考虑4个布尔值的可能选项的每种组合。例如替代解决方案,如果否则如果其他树?
我有4个布尔值,useFeatured,GROUPBY,ORDERBY &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如果这些选项别的树,我觉得真的很难相信这是唯一的解决方案,但我想不出别的。
这里是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
}
Pastebin if mess messing up。 http://pastebin.com/ECgASU3C
任何人都有更好的解决方案,我可以采用?请救救我!
A [决策表(http://en.wikipedia.org/wiki/Decision_table)将是非常适合... – 2013-04-10 09:18:31
whar是你的代码里面的单人如果:linq-to-sql查询? – 2013-04-10 09:20:35
这样的东西 orderedNodeList = nodeList.OrderBy(x => x.GetPropertyValue(“featured”))。ThenByDescending(x => Convert.ToDateTime(x.GetPropertyValue(orderBy))); – user2265321 2013-04-10 09:25:24