Go structs、slices、maps

Go structs、slices、maps

1、定义时*在变量名后面,使用时*在变量名前面。

  Go structs、slices、maps

  Go structs、slices、maps

2、定义struct,type在前,struct关键字在后。

  Go structs、slices、mapsGo structs、slices、maps

3、指针可以指定struct。

  Go structs、slices、maps

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: syntax. (And the order of named fields is irrelevant.)

  Go structs、slices、maps

5、array定义。

  Go structs、slices、maps

6、A slice points to an array of values and also includes a length.

  []T is a slice with elements of type T.

  Go structs、slices、maps

7、Slices can be re-sliced, creating a new slice value that points to the same array.

  [a,b]取值区间为a->b-1。

  Go structs、slices、maps

8、Making slices

  Go structs、slices、maps

  Go structs、slices、maps

9、The zero value of a slice is nil.

  A nil slice has a length and capacity of 0.

  Go structs、slices、maps

  对于上式,z是nil.

10、通过append方法添加元素。

  Go structs、slices、maps

11、range在for中可用来迭代slices。

  Go structs、slices、maps

12、通过_可以略去索引。

  Go structs、slices、maps

13、Maps must be created with make (not new) before use

  Go structs、slices、maps

14、Map literals are like struct literals, but the keys are required.

  Go structs、slices、maps

15、可以省略Vertex。If the top-level type is just a type name, you can omit it from the elements of the literal.

  Go structs、slices、maps

16、map的操作

  Go structs、slices、maps

17、函数也是一个变量。

  Go structs、slices、maps

18、closure。

  Go structs、slices、maps

参考:https://tour.golang.org/moretypes/1

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