JSON（javascript object Notation）是轻量级的数据交换格式 它和Javascript中的对象和数组语法上类似 JSON目前广泛用于前后台数据交互 JSON的官网提供了更多的介绍 Encoding 使用Marshal函数...

g_save greenlet存在heap上的数据区间由stack_copy 到 stack_copy + stack_saved指定 这里在把greenlet的数据存到heap上时 判断之前的那段区间是否足够存放 如果不够的话 重新申请内存 stat...

Introduction The Go memory model specifies the conditions under which reads of a variable in one goroutine can be guaranteed to observe values produced by writes to the same var...

Revel中可以用Validate来检查参数是否正确 用户请求是否给出了某个参数 revel的示例代码如下： func (c MyApp) SaveUser(username string) revel.Result {   // Username (required) must be ...

Errors Library routines must often return some sort of error indication to the caller. As mentioned earlier, Go's multivalue return makes it easy to return a detailed error desc...

Embedding Go does not provide the typical, type-driven notion of subclassing, but it does have the ability to “borrow” pieces of an implementation by embedding types within a ...

Blank identifier Go defines a special identifier _, called the blank identifier. The blank identifier can be used in a declaration to avoid declaring a name, and it can be used ...

Methods Pointers vs. Values Methods can be defined for any named type that is not a pointer or an interface; the receiver does not have to be a struct. 除了指针和接口(interface)...

Initialization Although it doesn't look superficially very different from initialization in C or C++, initialization in Go is more powerful. Complex structures can be built duri...

Data Allocation with new Go has two allocation primitives, the built-in functions new and make. They do different things and apply to different types, which can be confusing, bu...

Functions Multiple return values 返回多个值 One of Go's unusual features is that functions and methods can return multiple values. This form can be used to improve on a couple ...

Control structures The control structures of Go are related to those of C but differ in important ways. There is no do or while loop, only a slightly generalized for; switch is ...

Names Names are as important in Go as in any other language. In some cases they even have semantic effect: for instance, the visibility of a name outside a package is determined...

Interfaces are contracts that exist between an expected implementation of a functionality and its actual implementation. In real life there are innumerable interfaces that we ar...

Go allows you to define a struct that has fields but with no variable names. These fields are called anonymous fields. Let’s do a few examples to find out what they are and how...

package main import ( "fmt" "strings" ) func main() { /* for i := 1; i<=100; i++ { fmt.Println(strings.Repeat("A", i)) ...

这章节主要讲的是go中函数使用 在做习题过程中碰到的几个比较值得纪念的问题是 定义了命名返回函数 但是没有把它放在括号里面 结果一直编译通不过 但是一眼看过去还是不知道怎么错了A 还有一...

GOPATH and workspaces One of Go's design goals is to make writing software easier. To that end, the go command doesn't use Makefiles or other configuration files to guide progra...