所以我有一个由 collect 构建的数组。
@a = Relation.where(part: "v04")
@relations = @a.collect {|x| x.car}
构建..
=> ["f03", "f04"]
@a = Relation.where(part: "v03")
@relations = @a.collect {|x| x.car}
构建..
=> ["f01", "f03"]
我想要的是追加收集,这样我就可以从 v03 和 v04 构建一个数组,它看起来像这样。
=> ["f03", "f04", "f01", "f03"]
然后只保留唯一值,所以它看起来像这样。
=> ["f03", "f04", "f01"]
取出f03,因为它列出了两次。
最佳答案
["f03", "f04"] | ["f01", "f03"] #=> ["f03", "f04", "f01"]
car1 = ["f03", "f04"]
car2 = ["f01", "f03"]
car1 | car2 #=> ["f03", "f04", "f01"]
关于ruby - 附加具有唯一值的收集数组,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12230633/