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视频已搬运到B站 视频链接YouTube链接B站链接SELECT SELECT fist_name,last_name FROM customers 从 customers 表中查找 fist_name,last_name SELECT last_name,fist_name,points ...
https://lyc10031.github.io/document/2019/08/13/go-channel.html
学习Go channels 的记录最近在YouTube上看一个GO 的学习视频。记录下学习过程的知识点。链接在这里:Learn Go Programming - Golang Tutorial for Beginners因为太长了,YouTube不能自动生成字幕。啃的生肉,有理解不恰当地方的欢迎指正废话不多说直接...
https://lyc10031.github.io/2019/09/10/go-%E7%9F%A5%E8%AF%86%E7%82%B9.html
defer defer 是后进先出。panic 需要等defer 结束后才会向上传递。 出现panic会先按照defer的后入先出的顺序执行,最后才会执行panic。 例子1: package mainimport
https://lyc10031.github.io/2019/08/21/Strings.html
Go 字符串处理的常用函数Go标准库中的strings和strconv两个包里面有一些最常用的字符串操作函数strings 包中的常用函数strings官方文档func Contains(s,substr string) bool字符串s中是否包含 substr 返回bool值123456789fmt.Print...
https://lyc10031.github.io/document/2019/08/13/grep.html
grep ^vivek /etc/passwdgrep -E ‘word1|word2’ 文件名
原文地址本文是我的一些总结和记录。Socket介绍 Socket起源于Unix,而Unix基本哲学之一就是 “一切皆文件”,都可以用“打开open –> 读写write/read –> 关闭close”模式来操作。Socket就是该模式的一个实现,网络的Socket数据传输是一种特殊的I/O...
学习下goroutine的使用方法goroutine是Go并行设计的核心。goroutine说到底其实就是协程,但是它比线程更小,十几个goroutine可能体现在底层就是五六个线程,Go语言内部帮你实现了这些goroutine之间的内存共享。执行goroutine只需极少的栈内存 (大概是4~5KB) ,当然会...
https://lyc10031.github.io/2019/08/22/go-RESTful.html
原文地址本文是我的一些总结和记录。RESTful RESTful,是目前最为流行的一种互联网软件架构。因为它结构清晰、符合标准、易于理解、扩展方便,所以正得到越来越多网站的采用。 REST(REpresentational State Transfer)这个概念,首次出现是在 2000年Roy...
https://lyc10031.github.io/2019/08/13/interface1.html
Go的Interface 是一组method(方法)集,只要一个非interface类型数据实现了集合内的方法就能使用该interface直接看例子,struct继承的例子:1234567891011121314151617181920212223242526272829303132333435363738394...
https://lyc10031.github.io/2019/09/10/go-%E7%9F%A5%E8%AF%86%E7%82%B9.html#mpg
golang 的堆和栈var p *int //全局指针变量func f(){ var i int i = 1 p = &i //全局指针变量指向局部变量i}func f(){ p := new(int) //局部指针变量,使用new申请的空间 *p = 1}上面...
https://lyc10031.github.io/about.html
欢迎访问我的博客。 浮名浮利,虚苦劳神。叹隙中驹,石中火,梦中身。——苏轼《行香子·述怀》
原文地址本文是我的一些总结和记录。Go 如何编写测试用例Go语言中自带有一个轻量级的测试框架testing,使用自带的go test命令来实现单元测试和性能测试。可以基于这个框架写针对相应函数的测试用例,也可以基于该框架写相应的压力测试用例。建议安装gotests插件自动生成测试代码 go get -u -v ...
Go的Interface 是一组method(方法)集,只要一个非interface类型数据实现了集合内的方法就能使用该interface直接看例子,struc继承的例子:12345678910111213141516171819202122232425262728293031323334353637383940...
https://lyc10031.github.io/2019/09/02/gin%E8%B0%83%E7%94%A8%E6%B5%81%E7%A8%8B.html
文件树:my-gin1/├── conf│ └── app.ini├── main.go├── middleware├── models│ ├── models.go│ └── tag.go├── pkg│ ├── e│ │ ├── code.go│ │ └── msg.go│ ...
https://lyc10031.github.io/document/2019/08/09/select_VS_switch.html
switch is used to make a decision based on a variable value of any type.switch用于根据任何类型的变量值做出决定。 Read this for more details:Go’s switch is more general than ...
https://lyc10031.github.io/document/2019/08/13/go-channel.html
学习Go channels 的记录最近在YouTube上看一个GO 的学习视频。记录下学习过程的知识点。链接在这里:Learn Go Programming - Golang Tutorial for Beginners因为太长了,YouTube不能自动生成字幕。啃的生肉,有理解不恰当地方的欢迎指正废话不多说直接...
https://lyc10031.github.io/2019/09/17/go-scripts.html
翻转一个整数 输入123,返回321;输入-321返回-123 输入的整数要求是一个 32bit 有符号数,如果反转后溢出,则输出 01234567891011func reverse(x int) (num int) { for x != 0 { num = num*10 + x%10 x = x / ...
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