无法构建简单的 Golang 代码 – 切片字面量语法

huangapple
go评论128阅读模式
英文:

Cannot build simple golang code - Slice literal syntax

问题

我正在尝试使用go-dockerclient构建一个简单的Golang程序。

  1. package main
  3. import (
  4.         docker "github.com/fsouza/go-dockerclient"
  5. )
  7. func main() {
  8.         h := &docker.HostConfig{
  9.                 Memory:     4194304,
  10.                 MemorySwap: -1,
  11.                 CPUShares:  5,
  12.                 NetworkMode: "host",
  13.         }
  14.         client, err := docker.NewClient("unix:///var/run/docker.sock")
  15.         config := &docker.Config{
  16.                 Env:   []string{"FOO=foo"},
  17.                 Image: "redis",
  18.         }
  19.         opts := docker.CreateContainerOptions{
  20.                 Config:     config,
  21.                 HostConfig: h,
  22.         }
  23.         container, _ := client.CreateContainer(opts)
  24.         err = client.StartContainer(container.ID)
  25. }

这给我返回了以下错误信息：

  1. :~/gosrc/src/github.com/achanda$ go build
  2. # github.com/achanda
  3. ./main.go:16: syntax error: unexpected comma
  4. ./main.go:22: non-declaration statement outside function body
  5. ./main.go:23: non-declaration statement outside function body
  6. ./main.go:24: non-declaration statement outside function body
  7. ./main.go:25: syntax error: unexpected }

我似乎没有找到语法上的错误（尽管我是个新手）。问题是什么？

英文:

I am trying to build a simple golang program using go-dockerclient

  1. package main
  3. import (
  4.         docker "github.com/fsouza/go-dockerclient"
  5. )
  7. func main () {
  8.         h := &docker.HostConfig {
  9.                 Memory: 4194304,
  10.                 MemorySwap: -1,
  11.                 CPUShares: 5,
  12.                 NetworkMode: "host",
  13.         }
  14.         client, err := docker.NewClient("unix:///var/run/docker.sock")
  15.         config := &docker.Config {
  16.                 Env: ["FOO=foo"],
  17.                 Image: "redis",
  18.         }
  19.         opts := docker.CreateContainerOptions {
  20.                 Config: config,
  21.                 HostConfig: hostConfig,
  22.         }
  23.         container, _ := client.CreateContainer(opts)
  24.         err = client.StartContainer(container.ID)
  25. }

This gives me:

  1. :~/gosrc/src/github.com/achanda$ go build
  2. # github.com/achanda
  3. ./main.go:16: syntax error: unexpected comma
  4. ./main.go:22: non-declaration statement outside function body
  5. ./main.go:23: non-declaration statement outside function body
  6. ./main.go:24: non-declaration statement outside function body
  7. ./main.go:25: syntax error: unexpected }

I don't seem to find anything wrong with the syntax (admittedly a noob though). What is the problem?

答案1

得分: 2

切片字面值应该像这样：

  1. []string{"a", "b", "c"}

而不是像这样：

  1. ["a", "b", "c"]

所以将这个代码片段：

  1. Env: ["FOO=foo"],

改为：

  1. Env: []string{"FOO=foo"},
英文:

Slice literals should look like this:

  1. []string{"a", "b", "c"}

Not like this:

  1. ["a", "b", "c"]

So change this:

  1. Env: ["FOO=foo"],

To this:

  1. Env: []string{"FOO=foo"},

huangapple
  • 本文由 发表于 2015年10月2日 13:20:57
  • 转载请务必保留本文链接：https://go.coder-hub.com/32900985.html
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