go

How to route multiple certificates to one Flynn application?

由 守給你的承諾、 提交于 2020-12-13 04:58:07
问题 This post shows how to add a certificate to an application, my question, is there a way to add multiple certificates both non-wildcard and wildcard certificate to a single application. For example, I have an app called websites where it is home to multiple websites, is it possible to set several certificates to this application using Flynn? 回答1: You can add as many domains/certificates as you want to an app. Use the flynn route add http $DOMAIN -c $CERTIFICATE_PEM_FILE -k $KEY_PEM_FILE

I want to validate timezone at the backend which is coming from the frontend in golang

由 情到浓时终转凉″ 提交于 2020-12-13 04:08:50
问题 The front-end is sending timezones along with other user details during sign up. I need to put a validator on timezone for api testing. The data in the timezone is of the format: (GMT-10:00) Hawaii (GMT-08:00) Pacific Time (US & Canada) What I did is define all the timezones in an array and then search for the received timezone. If it exists then ok else return err. My function is: func timeZoneValidator(field validator.FieldLevel) bool { if field.Field().Kind() != reflect.String { return

How to set IP_MULTICAST_LOOP on multicast UDPConn in Golang

由 牧云@^-^@ 提交于 2020-12-13 03:43:27
问题 I need to set IP_MULTICAST_LOOP on a multicast UDP connection/socket so I can send/receive multicast packets on my local machine. This is the call that I've found which should work: l, err := net.ListenMulticastUDP("udp4", nil, addr) file, err := l.File() fd := syscall.Handle(file.Fd()) err = syscall.SetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, 1) However it fails with "not supported by windows". I'm pretty sure this is supported by sockets in windows, just not in the Go

How to set IP_MULTICAST_LOOP on multicast UDPConn in Golang

由 瘦欲@ 提交于 2020-12-13 03:42:52
问题 I need to set IP_MULTICAST_LOOP on a multicast UDP connection/socket so I can send/receive multicast packets on my local machine. This is the call that I've found which should work: l, err := net.ListenMulticastUDP("udp4", nil, addr) file, err := l.File() fd := syscall.Handle(file.Fd()) err = syscall.SetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, 1) However it fails with "not supported by windows". I'm pretty sure this is supported by sockets in windows, just not in the Go

How to set IP_MULTICAST_LOOP on multicast UDPConn in Golang

由 只愿长相守 提交于 2020-12-13 03:41:43
问题 I need to set IP_MULTICAST_LOOP on a multicast UDP connection/socket so I can send/receive multicast packets on my local machine. This is the call that I've found which should work: l, err := net.ListenMulticastUDP("udp4", nil, addr) file, err := l.File() fd := syscall.Handle(file.Fd()) err = syscall.SetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, 1) However it fails with "not supported by windows". I'm pretty sure this is supported by sockets in windows, just not in the Go

How to set IP_MULTICAST_LOOP on multicast UDPConn in Golang

由 本小妞迷上赌 提交于 2020-12-13 03:41:05
问题 I need to set IP_MULTICAST_LOOP on a multicast UDP connection/socket so I can send/receive multicast packets on my local machine. This is the call that I've found which should work: l, err := net.ListenMulticastUDP("udp4", nil, addr) file, err := l.File() fd := syscall.Handle(file.Fd()) err = syscall.SetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, 1) However it fails with "not supported by windows". I'm pretty sure this is supported by sockets in windows, just not in the Go

Refactor code to use a single channel in an idiomatic way

由 隐身守侯 提交于 2020-12-13 03:13:10
问题 I have the following code: package main import ( "fmt" "time" ) type Response struct { Data string Status int } func main() { var rc [10]chan Response for i := 0; i < 10; i++ { rc[i] = make(chan Response) } var responses []Response for i := 0; i < 10; i++ { go func(c chan<- Response, n int) { c <- GetData(n) close(c) }(rc[i], i) } for _, resp := range rc { responses = append(responses, <-resp) } for _, item := range responses { fmt.Printf("%+v\n", item) } } func GetData(n int) Response { time

专科程序员与本科程序员之间有什么区别？

由 孤街浪徒 提交于 2020-12-13 00:55:27
点击上方“ 程序员的成长之路 ”，选择“置顶公众号” 技术文章第一时间送达！ 先来一张图片，郑重声明一下，它全貌是这样的。 想歪的朋友面壁思过去~~~ 早上好，各位小伙伴们，新的一天开始了。 好看的人都会点文章右下角的好看哦！ 程序员就只分为 专科程序员与本科程序员 两种嘛？这种 鄙视链难道就这么短 ？? 必须要这么分： 每类人群，一般是后者瞧不起前者。 首先，你得按照学历来分 - 胎教程序员 - 学前班程序员 - 大班程序员 - 小学程序员 - 普通初中程序员 - 重点初中程序员 - 普通高中程序员 - 重点高中程序员 - 专科程序员 - 普通本科程序员 - 重点本科程序员 当然，你最好加上专业来区分 - 艺术转过来的程序员 - 文科转过来的程序员 - 社科转过来的程序员 - 理科转过来的程序员 - 非科班的工科转过来的程序员 - 法学转过来的程序员 - 商科转过来的程序员 - 科班程序员 其次，你得按照家庭情况来分 - 农村背景 - 四线城市背景 - 三线城市背景 - 二线城市背景 - 一线城市背景 然后，你得按照方向来分 - PC 端工程师 - 安卓工程师 - IOS 工程师 - 运维工程师 - 网络工程师 - 前端工程师 - 后端工程师 - 系统工程师 接着，你得按照开发语言来分 - Java 程序员 - C# 程序员 - Python 程序员 - Rust 程序员 -

POJ 3264.Balanced Lineup-RMQ(ST)详解

由 被刻印的时光 ゝ 提交于 2020-12-12 22:42:41
先写一道水题的博客，为后面要写的博客做一个铺垫。 ヾ(◍°∇°◍)ﾉﾞ RMQ（Range Minimum/Maximum Query），即区间最值查询，对于长度为n的数列A，回答若干询问RMQ（A,i,j）(i,j<=n)，返回数列A中下标在i，j之间的最小/大值。 时间复杂度： 1、朴素（即搜索），O(n)-O(qn) online。 2、 线段树 ，O(n)-O(qlogn) online。 3、ST（实质是 动态规划 ），O(nlogn)-O(q) online。 ST算法（Sparse Table），以求最大值为例，设d[i,j]表示[i,i+2^j-1]这个区间内的最大值，那么在询问到[a,b]区间的最大值时答案就是max(d[a,k], d[b-2^k+1,k])， 其中k是满足2^k<=b-a+1(即长度)的最大的k,即k=[ln(b-a+1)/ln(2)]。d的求法可以用 动态规划 ，d[i, j]=max(d[i, j-1],d[i+2^(j-1), j-1])。 传送门: 一篇写的容易理解的博客 2/21/2018 5:12:00 PM -------------------------------------------------------分割线-------------------------------------------------------
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