英文:
Why does an empty array returned from strings.Split have a length of 1 in golang?
问题
我刚开始学习golang，遇到了一个非常奇怪的问题。当你从strings.Split函数返回一个空数组时，它的长度为1。
示例：
package main
import (
"fmt"
"strings"
)
func main() {
test := strings.Split("", ",")
fmt.Println(test)
fmt.Println(len(test))
}
这将输出：
[]
1
为什么会这样呢？如果这是预期的行为，那么如何正确地检查一个数组是否为空呢？
谢谢。
英文:
I'm just starting out learning golang, and I've encountered something quite strange. When you get an empty array back from a call to strings.Split, it has a length of one.
Example
package main
import (
"fmt"
"strings"
)
func main() {
test := strings.Split("", ",")
fmt.Println(test)
fmt.Println(len(test))
}
This outputs:
[]
1
Why is this? If this is expected behavior, what is the correct way to check if an array is empty?
Thanks
答案1
得分: 8
根据@u_mulder的评论所说，该数组并不为空，因为它包含一个空字符串。
英文:
As said in the comments by @u_mulder, the array isn't empty as it contains an empty string.
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