Go语言在处理大数据时的效率应用

package main

import (
    "bufio"
    "fmt"
    "os"
)

func main() {
    file, err := os.Open("data.txt")
    if err != nil {
        fmt.Println("文件打开失败：", err)
        return
    }
    defer file.Close()

    scanner := bufio.NewScanner(file)
    for scanner.Scan() {
        line := scanner.Text()
        // 处理数据逻辑
        fmt.Println("处理数据：", line)
    }
}

package main

import (
    "fmt"
    "sync"
)

func processData(data string, wg *sync.WaitGroup) {
    defer wg.Done()
    // 数据处理逻辑
    fmt.Println("处理数据：", data)
}

func main() {
    data := []string{"data1", "data2", "data3", "data4"}
    var wg sync.WaitGroup

    for _, d := range data {
        wg.Add(1)
        go processData(d, &wg)
    }

    wg.Wait()
}

package main

import (
    "fmt"
    "sync"
)

func main() {
    data := []int{1, 2, 3, 4, 5}
    var sum int
    var wg sync.WaitGroup

    for _, d := range data {
        wg.Add(1)
        go func(d int) {
            defer wg.Done()
            sum += d
        }(d)
    }

    wg.Wait()

    fmt.Println("数据总和为：", sum)
}