关联数组的声明和使用

在 Vue 中

const IterateState = (row) => {
  const state = {
    1: "Success",
    2: "Warning",
    3: "Error",
  };
  return state[row] || "Unknown"; // 如果 row 不在对象中，返回 "Unknown"
};

在 Shell 中

# 声明一个关联数组
declare -A _cfg

# 给数组赋值
_cfg["sleep"]="this is sleep"
_cfg["data"]="this is data"
_cfg["name"]="this is name"
_cfg["type"]="this is type"

# 输出数组的值
echo "${_cfg["sleep"]}"
echo "${_cfg["data"]}"
echo "${_cfg["name"]}"
echo "${_cfg["type"]}"

# 输出所有键
echo "${!_cfg[@]}"

# 输出所有值
echo "${_cfg[@]}"

在 Go 中

package main

import "fmt"

func main() {
    var cfg = map[string]string{
        "sleep": "this is sleep",
        "data": "this is data",
        "name": "this is name",
        "type": "this is type",
    }

    // 输出数组的值
    fmt.Println(cfg["sleep"])
    fmt.Println(cfg["data"])
    fmt.Println(cfg["name"])
    fmt.Println(cfg["type"])
}