英文:
Golang - Slices in nested structs
问题
我有一个深度嵌套的结构体，其中包含两个切片，如下所示：
package main
import "fmt"
type bar struct {
v1 []int
v2 []int
}
type foo struct{ bar bar }
type tar struct{ foo foo }
func main() {
f := &tar{foo: foo{bar: bar{v1: make([]int, 2), v2: make([]int, 3)}}}
fmt.Printf("Hello, playground %s", f)
}
如何初始化这两个切片？或者如何使这段代码工作？
这是它的 Golang Play 链接：http://play.golang.org/p/zLutROI4YH。
英文:
I have a deeply nested struct which contains two slices, as seen below:
package main
import "fmt"
type bar struct {
v1 []int
v2 []int
}
type foo struct{ bar bar }
type tar struct{ foo foo }
func main() {
f := &tar{foo: foo{bar: bar{v1: [2], v2: [3]}}}
fmt.Printf("Hello, playground %s", f)
}
How do I initialize the two slices? Or how do I get this code working?
Here is the Golang Play for it: http://play.golang.org/p/zLutROI4YH.
答案1
得分: 7
可以使用[]int{1,2,3}的表示方法来实现，例如（解决你的问题）：
&tar{foo: foo{bar: bar{v1: []int{2}, v2: []int{2}}}}
英文:
It's possible with []int{1,2,3} notation, example (solves your problem):
&tar{foo: foo{bar: bar{v1: []int{2}, v2: []int{2}}}}
P.S. I strongly advise you to read The Go Programming Language Specification and FAQ section.
答案2
得分: 1
v1和v2是切片。你初始化它们的方式是使用make([]int, YOUR_INITIAL_SIZE)，而不是[2]和[3]。
英文:
v1 and v2 are slices. The way you initialize those is with make([]int, YOUR_INITIAL_SIZE) instead of [2] and [3].
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