英文:
Returning a struct in Golang
问题
我刚开始学习Golang，对于与其他包的交互和使用结构体感到非常困惑。我现在只是尝试返回由gopsutil库中的一个方法生成的结构体。具体来说，我想返回以下函数的结果：链接描述
我写的代码如下：
package main
import (
"fmt"
"github.com/shirou/gopsutil/cpu"
)
func main() {
cpuTimes := getCpuTime()
fmt.Println(cpuTimes)
}
func getCpuTime() cpu.TimesStat {
ct, _ := cpu.Times(false)
return ct
}
这会返回TimesStat未定义的错误。我尝试了几种不同的语法变化，但是我发现唯一能编译通过的返回值是interface{}，这会得到带有方括号的结构体（例如[{values...}]），而且还会导致其他问题。我似乎找不到任何我想做的事情的示例。感谢任何帮助。
英文:
I'm just starting with Golang and I am very confused about interacting with other packages and using structs. Right now I am simply trying to return the a struct generated by a method in the gopsutil library. Specifically the return of the following function: enter link description here
My code for this is the following:
package main
import (
"fmt"
"github.com/shirou/gopsutil/cpu"
)
func main() {
cpu_times = getCpuTime()
fmt.Println(cpu_times)
}
func getCpuTime() TimesStat {
ct, _ := cpu.Times(false)
return ct
}
This returns TimesStat as undefined. I tried returning a few different syntactical variations, however the only return value I have found that compiles is interface{}, which gets me the struct inside of brackets (eg [{values...}]) and that led to some other problems. I can't seem to find any examples of what I am trying to do. Any help appreciated thanks.
1: https://godoc.org/github.com/shirou/gopsutil/cpu#Times "godoc link"
答案1
得分: 7
你需要在类型之前包含包名，像这样：
func getCpuTime() []cpu.TimesStat { // 在类型之前加上包名
ct, _ := cpu.Times(false)
return ct
}
由于这是一个 cpu.TimesStat 的切片，你可能想在调用函数中添加一个索引，或者将函数更改为只返回单个 cpu.TimesStat。（感谢 @algrebre）
英文:
you need to include the package name before the type, like so:
func getCpuTime() []cpu.TimesStat { // with package name before type
ct, _ := cpu.Times(false)
return ct
}
since that is a slice of cpu.TimesStat, you probably want to add an index in the calling function or change the function to just return a single cpu.TimesStat. (thanks to @algrebre)
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