doulu7921 2012-05-24 22:28
浏览 51
已采纳

使用Go编程语言读取和使用外部文件

I have been learning the Go programming language by doing some of the Project Euler problems. I am now on [problem 13] (http://projecteuler.net/problem=13). It contains an external file with 100 lines of 50 digit numbers. My question is: How can this file be read into a Go program and worked with? Does Go have a readlines function? I've read about the io and ioutil packages, and about all I can come up with is reading in the file and printing it; however, I am not sure how to work with the file... Can it be assigned to a variable? Is there a readlines function, etc...

Any help would be appreaciated.

Here is what I have so far:

package main

import "fmt"
import "io/ioutil"

func main() {
        fmt.Println(ioutil.ReadFile("one-hundred_50.txt"))
}
  • 写回答

3条回答 默认 最新

  • dsadsa123111 2012-05-24 23:28
    关注

    There are ways to read a file line by line (and there are examples if you search here on SO) but really ioutil.ReadFile is a good start there. Sure you can assign it to a variable. Look at the function signature for ReadFile and see how it returns both a byte slice and an error. Assign both; check that the error is nil. Print the error if it's not nil so you can see what's wrong. Then once you have the bytes in a variable, try spitting it up by lines. Try bytes.Split, or easier, convert it to a string and use strings.Split.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(2条)

报告相同问题?

悬赏问题

  • ¥15 在误装Windows server2019 后如何利用Windows.old恢复?
  • ¥20 代码实现状态连接包过滤防火墙的设计与实现
  • ¥15 vscode的红色箭头爆红和has no default export报错
  • ¥15 关于#sql#的问题:#情况描述 在用vs对项目进行调试时,出现找不到网络路径,然后查看SQL配置工具,发现SQL服务显示远程调用过程失败(相关搜索:防火墙)
  • ¥15 eNSP中基于默认路由及浮动路由的公司与分部互联和校园网综合项目
  • ¥15 主要进行描述泥浆在管路不同区段泥浆的密度不相同,泥浆的密度有高有低,此时管路的摩阻分布需要怎么计算,(标签-matlab)
  • ¥40 通过编制程序计算圆管内层流充分发展对流换热,参数如图5-4,以及公式5-16所示,要求用表5-6对程序计算准确性进行验证
  • ¥20 该学习哪个编程语言? AI会取代程序员吗?
  • ¥15 ensp如何拼通IP地址
  • ¥15 saber软件导入Ibis模型报错