Map literals are like struct literals, but the keys are required. package main import "fmt" type Vertex struct { Lat, Long float64 } var m = map[string]Vertex { "Bell Labs": Vertex { 40.6833, -74.39967, }, "Google": Vertex{ 3…

If the top-level type is just a type name, you can omit it from the elements of the literal. package main import "fmt" type Vertex struct { Lat, Long float64 } var m = map[string]Vertex { "Bell Labs": {40.68433,-74.39967}, "Google…

A struct literal denotes a newly allocated struct value by listing the values of its fields. You can list just a subset of fields by using the Name: syntax. (And the order of named fields is irrelevant.) The special prefix & constructs a pointer to a…

http://tour.golang.org/#1 中文版:http://go-tour-cn.appsp0t.com/#4 package main import ( "fmt" "math") func main() { fmt.Println("Happy", math.Pi, "Day")} 每个 Go 程序都是由包组成的. 程序运行的入口从包的 main方法. 这个程序使用并导入了包 "fmt" …

示例 8.1 make_maps.go package main import "fmt" func main() { var mapLit map[string]int //var mapCreated map[string]float32 var mapAssigned map[string]int mapLit = map[string]int{"one": 1, "two": 2} mapCreated := make(map[strin…

官网教程 https://www.dartlang.org/guides/language/language-tour dart是一个单线程的语言,没有多线程 Final and const If you never intend to change a variable, use final or const, either instead of var or in addition to a type. A final variable can be set only once; a con…

[Go structs.slices.maps] 1.定义时*在变量名后面,使用时*在变量名前面. 2.定义struct,type在前,struct关键字在后. 3.指针可以指定struct. 4.A struct literal denotes a newly allocated struct value by listing the values of its fields. You can list just a subset of fields by using the Name: sy…

Angular 2 已经正式 Release 了,Thoughtram 已经发布了一系列的文档,对 Angular 2 的各个方面进行深入的阐释和说明. 我计划逐渐将这个系列翻译出来,以便对大家学习 Angular 2 提供一些方便. Getting Started Building a Zippy component in Angular 2 Developing a Tabs component in Angular 2 Angular 2 Template Syntax demystifi…

1. { 换行:   Opening Brace Can't Be Placed on a Separate Line 2. 定义未使用的变量:  Unused Variables 2. import 但未使用: Unused Imports 3. a := 123 简短变量定义方式只能在函数内部使用: Short Variable Declarations Can Be Used Only Inside Functions 4. 重复定义 简短变量: Redeclaring Variables…

http://devs.cloudimmunity.com/gotchas-and-common-mistakes-in-go-golang/ 50 Shades of Go: Traps, Gotchas, and Common Mistakes for New Golang Devs Go is a simple and fun language, but, like any other language, it has a few gotchas... Many of those gotc…