英文:
Does golang have the equivalent of this Python short circuit idiom `z = x or y`
问题
在Python中，z = x or y可以理解为将z赋值为如果x为假值，则为y，否则为x，在golang中是否有类似的习惯用法？
具体来说，右侧的两个变量是字符串，如果第一个变量非空，则将其赋值给z，否则将第二个变量赋值给z。
英文:
In Python z = x or y can be understood as assign z as if x is falsey, then y, else x, is there a similar idiom in golang?
Specifically the two variables on the right are strings, I'd like to assign the first if it's non-emtpy, otherwise the second.
答案1
得分: 4
不，你必须使用if/else：
s1, s2 := "", "hello"
var x string
if s1 == "" {
x = s2
} else {
x = s1
}
英文:
No, you have to use if/else:
s1, s2 := "", "hello"
var x string
if s1 == "" {
x = s2
} else {
x = s1
}
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