基于sturct的实现, 由于有明确的struct对象结构, 通常直接创建一个全新对象, 同时把老数据复制进去。 例如gin-gonic 的Copy()方法 // Copy returns a copy of the current context that can be safely used outside the request's scope.// This has to be used when the context has to be passed to a ...
package main import ( "fmt" "reflect" ) // 递归深拷贝函数 func deepCopy(src interface{}) interface{} { val := reflect.ValueOf(src) if val.Kind() != reflect.Ptr { return val.Interface() } // 创建新的指针类型实例 newVal := reflect.New(val.Type().Elem()).Elem() // 递归复制...
type Logger struct { // The logs are `io.Copy`'d to this in a mutex. It's common to set this to a // file, or leave it default which is `os.Stderr`. You can also set this to // something more adventurous, such as logging to Kafka. Out io.Write // Hooks for the logger ...
folder go.mod go.sum main.go $./ls-a...git folder go.mod go.sum main.go $./ls./folder./:folder go.mod go.sum main.gofolder:file1 file2 $./ls-h Usageof./ls:-a,--all Include directory entries whose names beginwithadot(.).-h,--help Showthishelp message. 是不是相当给力啦!
// A WaitGroup must not be copied after first use. // // In the terminology of the Go memory model, a call to Done // “synchronizes before” the return of any Wait call that it unblocks. type WaitGroup struct { noCopy noCopy ...
returnd.(chanstruct{}) } 总结 本文复盘了golang项目生产环境某次OOM的现场,记录了本人未能强化的golang的知识点。 从closed信道能持续读取零值 defer 函数压栈,在函数返回之前出栈。 在业务逻辑结束后尽早 执行cancel() 解绑子级关系和释放timer资源,避免内存泄露。
code-generator是对 gengo 的一层包装,完成 kubernetes 中常见的一些代码生成任务,比如 客户端代码生成、deepcopy 类代码生成等等,大部分是围绕 kubernetesapi对象的生成工具。 原理 Gengo 的目标是完成一个方便用户自行实现各种代码生成工具的库,他完成了几项工作 ...
// A WaitGroup must not be copied after first use./// In the terminology of the Go memory model, a call to Done// “synchronizes before” the return of any Wait call that it unblocks.type WaitGroup struct{noCopy noCopy state atomic.Uint64// high 32 bits are counter, low 32 bits...
Using Struct Using Interface Using Interface + Struct Polymorphism OOP: Polymorphism in Go Complete Guide Compile Time Polymorphism in Go (Golang) Runtime Polymorphism in Go (Golang) Method Overloading in Go (Alternatives/Workarounds) Abstract Classes ...
// Structstype ViewData struct { User User}type User struct { ID int Email string HasPermission func(string) bool}// Example of creating a ViewDatavd := ViewData{User: User{ID: 1,Email: "curtis.vermeeren@gmail.com",// Create the HasPermission functionHasPermission...