Arrays （数组）, Slices （切片） 和 Maps （映射） 是常见的一类数据结构
初始化
package main
import (
"fmt"
)
func main() {
var scores [10]int
scores[0] = 99
fmt.Printf("scoers:%d\n", scores)
socres_english := [4]int{99, 100, 100, 99}
for index, value := range socres_english {
fmt.Printf("%d\t %d", index, value)
}
}Starting: C:\Users\livingbody\go\bin\dlv.exe dap --check-go-version=false --listen=127.0.0.1:14487 from c:\Users\livingbody\goworkspace\hello
DAP server listening at: 127.0.0.1:14487
Type 'dlv help' for list of commands.
scoers:[99 0 0 0 0 0 0 0 0 0]
0 991 1002 1003 99
Process 14356 has exited with status 0
Detaching
dlv dap (15128) exited with code: 0
切片是轻量的包含并表示数组的一部分的结构。
# 即创建长度10，容量0的切片 score := make([]int, 0, 10)
package main
import (
"fmt"
)
func main() {
var scores [10]int
scores[0] = 99
fmt.Printf("scoers:%d\n", scores)
socres_english := [4]int{99, 100, 100, 99}
for index, value := range socres_english {
fmt.Printf("%d\t %d\n", index, value)
}
score_math := make([]int, 0, 10)
score_math = append(score_math, 100)
fmt.Println(score_math)
fmt.Println(score_math[0])
score_math = score_math[0:8]
score_math[7] = 99
fmt.Println(score_math)
c := cap(score_math)
fmt.Println(c)
for i := 0; i < 25; i++ {
score_math = append(score_math, i)
if cap(score_math) != c {
c = cap(score_math)
fmt.Println(c)
}
}
}输出：
Type 'dlv help' for list of commands.
scoers:[99 0 0 0 0 0 0 0 0 0]
0 99
1 100
2 100
3 99
[100]
100
[100 0 0 0 0 0 0 99]
10
20
40
Process 20448 has exited with status 0
Detaching
dlv dap (7204) exited with code: 0
就好比其他语言中的 hash 表或者字典。它们的工作方式就是：定义键和值，并且可以获取，设置和删除其中的值。
同样通过make方法创建。
package main
import (
"fmt"
)
func main() {
lookup := make(map[string]int)
lookup["goku"] = 9001
power, exists := lookup["vegeta"]
fmt.Println(power, exists)
total := len(lookup)
fmt.Println(total)
delete(lookup, "goku")
fmt.Println(len(lookup))
}Starting: C:\Users\livingbody\go\bin\dlv.exe dap --check-go-version=false --listen=127.0.0.1:14812 from c:\Users\livingbody\goworkspace\hello
DAP server listening at: 127.0.0.1:14812
Type 'dlv help' for list of commands.
0 false
1
0
Process 924 has exited with status 0
Detaching
dlv dap (700) exited with code: 0
迭代
for key, value := range lookup {
...
}注意：
map迭代没有顺序
