英文:
Combining if statement for multiple variable in a match case in scala
问题
我正在寻找一种更简洁的方式来执行以下操作的Scala代码：
val myVar1 = myObj.getMyVar1()val myVar2 = myObj.getMyVar2()val myVar3 = myObj.getMyVar3()val myVar4 = myObj.getMyVar4()if (checkSomething(myVar1)) {dosomething(myVar1)}if (checkSomething(myVar2)) {dosomething(myVar2)}if (checkSomething(myVar3)) {dosomething(myVar3)}if (checkSomething(myVar4)) {dosomething(myVar4)}
英文:
I am looking for a cleaner way of doing the following operation in scala
val myVar1 = myObj.getMyVar1()val myVar2 = myObj.getMyVar2()val myVar3 = myObj.getMyVar3()val myVar4 = myObj.getMyVar4()if (checkSomething(myVar1)) {dosomething(myVar1)} }if (checkSomething(myVar2)) {dosomething(myVar2)}if (checkSomething(myVar3)) {dosomething(myVar3)} }if (checkSomething(myVar4)) {dosomething(myVar4)}
答案1
得分: 2
你可以使用 List 来存储所有你的变量，然后使用 filter 和 map。
val list: List[_] = List(myVar1, myVar2, myVar3, myVar4)list.filter(checkSomething).foreach(doSomething)
英文:
You can use List to store all your variables and then use filter and map
val list: List[_] = List(myVar1, myVar2, myVar3, myVar4)list.filter(checkSomething).foreach(doSomething)
答案2
得分: 1
You could also use the for/yield style with guard if condition as below.
No need to mention the return type of myVars since this is Scala.
val myVars = List(myVar1, myVar2, myVar3, myVar4)for {x <- myVarsif checkSomething(x)} yield doSomething(x)
英文:
You could also use the for/yield style with guard if condition as below.
No need to mention the return type of myVars since this is Scala.
val myVars = List(myVar1, myVar2, myVar3, myVar4)for {x <- myVarsif checkSomething(x)} yield doSomething(x)
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