{"id":88,"date":"2024-02-07T21:58:37","date_gmt":"2024-02-07T13:58:37","guid":{"rendered":"https:\/\/669082.xyz\/?p=88"},"modified":"2024-02-08T08:01:32","modified_gmt":"2024-02-08T00:01:32","slug":"20240207%e5%ad%a6%e4%b9%a0golang_%e9%9d%9e%e7%b3%bb%e7%bb%9f%e5%8c%96%e5%ad%a6%e4%b9%a0","status":"publish","type":"post","link":"https:\/\/669082.xyz\/index.php\/2024\/02\/07\/20240207%e5%ad%a6%e4%b9%a0golang_%e9%9d%9e%e7%b3%bb%e7%bb%9f%e5%8c%96%e5%ad%a6%e4%b9%a0\/","title":{"rendered":"20240207\u5b66\u4e60golang_\u975e\u7cfb\u7edf\u5316\u5b66\u4e60"},"content":{"rendered":"

golang\u8f93\u51fahelloWorld<\/p>\n

package main\nimport "fmt"\nfunc main() {\n    fmt.Println("hello world")\n}<\/code><\/pre>\n
\u5173\u4e8e\u53d8\u91cf\u4e0e\u5e38\u91cf<\/h5>\n
golang\u53d8\u91cf\u58f0\u660e<\/p>\n
a := "abcdefg"\nfmt.Printf("a = %s, type of a = %T\\n", a, a)\nfmt.Println(a)\n\nb := 1.23\nfmt.Printf("type of b = %T\\n", b)\nfmt.Println(b)<\/code><\/pre>\n
golang\u5e38\u91cf<\/p>\n
const pi float64 = 3.1415\nfmt.Println(pi)<\/code><\/pre>\n
\u5173\u4e8e\u51fd\u6570<\/h5>\n
golang\u51fd\u6570\u521d\u5b66<\/p>\n
func main() {\n    s := fplus(2, 3)\n    fmt.Println(s)\n}\n\nfunc fplus(a int, b int)(c int){\n    c = a + b\n    return\n}<\/code><\/pre>\n
glonag\u51fd\u6570\u8fd4\u56de\u4e24\u4e2a\u7ed3\u679c<\/p>\n
func main() {\n    a, b := plusone(5, 6)\n    fmt.Println(a)\n    fmt.Println(b)\n}\n\nfunc plusone(a int, b int)(int, int){\n    return a + 1, b + 1\n}<\/code><\/pre>\n
\u5bfc\u5305\u4e0einit\u51fd\u6570<\/h5>\n
\u56fe\u7247\u8bf4\u660e import\u5bfc\u5305\u4e0einit\u51fd\u6570
\n\"file\"
\n\u8fd9\u4e5f\u5c31\u662f\u8bf4\u5982\u679c\u6587\u4ef6\u91cc\u6709\u5bfc\u5305\uff0c\u4f1a\u5148\u521d\u59cb\u5316\u5bfc\u5165\u7684\u5305\u91cc\u7684 \u5e38\u91cf\uff0c\u53d8\u91cf, \u6267\u884cinit\u51fd\u6570
\n\u6ce8\u610f:init\u51fd\u6570\u7684\u6267\u884c\u4f1a\u65e9\u4e8emain\u51fd\u6570<\/p>\n
\u5173\u4e8ego mod\u6ce8\u610f
\n\u5982\u679c\u5f00\u542f\u5e76\u4f7f\u7528\u4e86go mod \u5728\u5bfc\u5165\u81ea\u5df1\u5199\u7684\u5305\u7684\u65f6\u5019
\nimport module\u540d\/\u5305\u540d  \u8fd9\u4e2a\u5305\u540d\u5176\u5b9e\u662f\u662f\u6587\u4ef6\u5939\u540d \u540c\u65f6\u4e5f\u662f\u6587\u4ef6\u91cc\u58f0\u660e\u7684\u5305\u540d<\/p>\n
package main\nimport (\n    "fmt"\n    \/\/study\u662fgo mod init\u7684\u65f6\u5019\u8f93\u5165\u7684module\u540d\n    \/\/lib1  lib2 \u5176\u5b9e\u662f\u6587\u4ef6\u5939\u540d  \u4e5f\u662f\u6587\u4ef6\u91cc\u7684package\u540d\n    "study\/lib1"\n    "study\/lib2"\n)\n\nfunc main() {\n    fmt.Println("abc")\n    \/\/\u51fd\u6570\u540d \u9996\u5b57\u6bcd\u5927\u5199\u624d\u80fd\u5916\u90e8\u8c03\u7528\n    lib1.Test()\n    lib2.Test()\n}<\/code><\/pre>\n
import\u533f\u540d\u5bfc\u5165 \u5176\u5b9e\u5c31\u662f\u7ed9\u5305\u8d77\u4e86\u4e2a\u522b\u540d\u3000_<\/p>\n
package main\nimport (\n    "fmt"\n    \/\/\u5982\u679c\u53ea\u60f3\u8c03\u7528\u5305\u91cc\u7684init\u65b9\u6cd5 \u9700\u8981\u533f\u540d\u5bfc\u5165\n    _ "study\/lib1"\n    _ "study\/lib2"\n)\n\nfunc main() {\n    fmt.Println("abc")\n}<\/code><\/pre>\n
import\u5bfc\u5165\u7684\u5305\u4e5f\u53ef\u4ee5\u8d77\u4e2a\u522b\u540d<\/p>\n
package main\n\nimport (\n    "fmt"\n    \/\/\u8fd9\u91cc\u4e3a\u5bfc\u5165\u7684\u5305\u8d77\u4e2a\u522b\u540d\uff0c\u4e0b\u9762\u53ef\u4ee5\u7528\u522b\u540d\u6765\u8c03\u7528 \n    abc "study\/lib1"\n    def "study\/lib2"\n)\n\nfunc main() {\n\n    fmt.Println("abc")\n    abc.Test()\n    def.Test()\n}<\/code><\/pre>\n
\u5173\u4e8e\u6307\u9488<\/h5>\n
golang\u6307\u9488\u521d\u5b66<\/p>\n
func main() {\n    a := 10\n    \/\/&a \u4ee3\u8868 \u53d6\u5730\u5740 \u5f15\u7528\n    changeValue(&a)\n    fmt.Println(a)\n}\n\n\/\/*int \u4ee3\u8868\u6307\u9488\u7c7b\u578b \u5f15\u7528\u7c7b\u578b\nfunc changeValue(p *int){\n    \/\/*p \u4ee3\u8868\u53d6\u5185\u5b58\u5730\u5740\u91cc\u7684\u503c \u4e5f\u53eb\u89e3\u5f15\u7528\n    *p = 100\n}<\/code><\/pre>\n
\u5173\u4e8edefer<\/h5>\n
defer\u5173\u5065\u5b57 \u50cf\u4e2a\u6790\u6784\u51fd\u6570
\n\u6ce8\u610f:defer\u6bd4return\u8fd8\u8981\u665a\u6267\u884c<\/p>\n
func main() {\n    \/\/defer\u5173\u5065\u5b57 \u6700\u540e\u6267\u884c\u7684\u8bed\u53e5 \u50cf\u662fPHP\u91cc\u7684\u6790\u6784\u51fd\u6570\n    defer fmt.Println("defer  ..")\n\n    fmt.Println("a")\n    fmt.Println("b")\n}<\/code><\/pre>\n
\u5173\u4e8e\u6570\u7ec4\u4e0eslice<\/h5>\n
\u56fa\u5b9a\u957f\u5ea6\u6570\u7ec4\u4f7f\u7528(\u4e0d\u597d\u7528)
\n\u6ce8\u610f:\u4e0d\u5efa\u8bae\u4f7f\u7528 \u5efa\u8bae\u7528slice\u5207\u7247(\u52a8\u6001\u6570\u7ec4)
\n\u7531\u4e8e\u957f\u5ea6\u56fa\u5b9a,\u4f20\u7ed9\u51fd\u6570\u5f53\u53c2\u6570\u90fd\u4e0d\u597d\u4f20
\n\u6570\u7ec4\u4f5c\u4e3a\u51fd\u6570\u53c2\u6570\u7684\u8bdd\u662f\u503c\u4f20\u9012<\/p>\n
func main() {\n    \/\/\u5b9a\u4e49\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\n    var myArray1 [10]int\n\n    \/\/\u5b9a\u4e49\u5e76\u521d\u59cb\u5316\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4 \u540e\u97625\u4e2a\u5143\u7d20\u7531\u4e8e\u6ca1\u6709\u7ed9\u6570\u636e \u662f0\n    myArray2 := [10]int{1, 2, 3, 4, 5}\n\n    \/\/\u904d\u5386\n    for i := 0; i < len(myArray1); i++ {\n        fmt.Println(myArray1[i])\n    }\n\n    \/\/\u53e6\u4e00\u79cd\u65b9\u6cd5\u904d\u5386\n    for index, value := range myArray2 {\n        fmt.Println("index=", index)\n        fmt.Println("value=", value)\n    }\n}<\/code><\/pre>\n
slice \u5207\u7247 \u52a8\u6001\u6570\u7ec4
\n\u6ce8\u610f \u5207\u7247\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u51fd\u6570\u7684\u8bdd \u662f\u5730\u5740\u4f20\u9012 \u4e5f\u53eb\u5f15\u7528\u4f20\u9012
\n\u7528\u6cd5\u8ddf\u6570\u7ec4\u662f\u4e00\u6837\u7684,\u53ea\u662f\u9ad8\u7ea7\u4e00\u70b9<\/p>\n
func main() {\n    \/\/\u5b9a\u4e49\u4e00\u4e2a\u5207\u7247\n    mySlice := []int{1,2,3}\n    \/\/\u904d\u5386\n    for _, value := range mySlice{\n        fmt.Println(value)\n    }\n}<\/code><\/pre>\n
\u53e6\u4e00\u79cd\u5b9a\u4e49\u5207\u7247\u7684\u65b9\u5f0f<\/p>\n
    \/\/\u58f0\u660e\u4e00\u4e2a\u5207\u7247 \u67093\u4e2a\u5bb9\u91cf\n    mySlice1 := make([]int, 3)\n    fmt.Println(mySlice1)   <\/code><\/pre>\n
\u5207\u7247\u7684\u957f\u5ea6\u548c\u5bb9\u91cf<\/p>\n
    \/\/\u5207\u7247\u7684\u957f\u5ea6 \u548c \u5bb9\u91cf\n    numbers := make([]int, 3, 10)\n    fmt.Printf("len = %d, cap = %d\\n", len(numbers),  cap(numbers))<\/code><\/pre>\n
\u5411slice\u91cc\u7528append\u6dfb\u52a0\u5143\u7d20<\/p>\n
func main() {\n    \/\/\u5207\u7247\u7684\u957f\u5ea6 \u548c \u5bb9\u91cf \u5f53\u524d\u5bb9\u91cf\u4e3a5\n    numbers := make([]int, 3, 5)\n    \/\/\u5411slice\u91cc\u6dfb\u52a0\u5143\u7d20\n    numbers = append(numbers, 4)\n    numbers = append(numbers, 6)\n    \/\/\u5f53\u6dfb\u52a0\u7684\u5143\u7d20\u8d85\u8fc7\u5bb9\u91cf\u4e86,\u4f1a\u81ea\u52a8\u6269\u5bb9\n    numbers = append(numbers, 7)\n    fmt.Printf("len = %d, cap = %d\\n", len(numbers), cap(numbers))\n}<\/code><\/pre>\n
\u5207\u7247\u7684\u622a\u53d6 \u7528\u4e0b\u6807\u622a\u53d6
\n\u6ce8\u610f:\u622a\u53d6\u524d\u4e0e\u622a\u53d6\u540e\u7684\u662f\u540c\u4e00\u4e2a\u5207\u7247 \u6539\u53d8\u4efb\u4f55\u4e00\u4e2a \u53e6\u4e00\u4e2a\u4e5f\u4f1a\u53d8
\n\u5982\u679c\u4e0d\u60f3\u8fd9\u6837 \u53ef\u4ee5\u7528copy\u51fd\u6570 \u62f7\u8d1d\u4e00\u4efd\u518d\u622a\u53d6<\/p>\n
func main() {\n    \/\/\u5207\u7247\u7684\u622a\u53d6\n    mySlice := make([]int, 2)\n    mySlice[0] = 2\n    mySlice[1] = 3\n    mySlice = append(mySlice, 4)\n    \/\/\u622a\u53d6    s := arr[startIndex:endIndex]\n    newSlice := mySlice[1:2]\n    fmt.Println(newSlice)\n}<\/code><\/pre>\n
\u5173\u4e8emap<\/h5>\n
\u6ce8\u610f:map\u4f5c\u4e3a\u51fd\u6570\u53c2\u6570\u7684\u8bdd  \u662f \u5f15\u7528\u4f20\u9012
\nmap\u7b80\u5355\u4f7f\u7528<\/p>\n
func main() {\n    \/\/map\u7b2c\u4e00\u79cd\u58f0\u660e\u65b9\u5f0f\n    \/\/map\u58f0\u660e\n    var myMap1 map[string]string\n    \/\/make\u5bb9\u91cf\n    myMap1 = make(map[string]string, 3)\n    myMap1["one"] = "php"\n    myMap1["two"] = "java"\n    myMap1["three"] = "python"\n    \/\/\u5bb9\u91cf\u7528\u5b8c\u4e86\u4f1a\u81ea\u52a8\u6269\u5bb9\n    myMap1["four"] = "rust"\n\n    fmt.Println(myMap1)\n\n    \/\/map\u7b2c\u4e8c\u79cd\u58f0\u660e\n    test2 := make(map[string]string)\n    test2["one"] = "php"\n    test2["two"] = "golang"\n    test2["three"] = "java"\n    fmt.Println(test2) \/\/map[one:php two:golang three:java]\n\n    \/\/map\u7b2c\u4e09\u79cd\u58f0\u660e\n    test3 := map[string]string{\n        "one" : "php",\n        "two" : "golang",\n        "three" : "java",\n    }\n    fmt.Println(test3) \/\/map[one:php two:golang three:java]\n\n    \/\/\u590d\u6742\u4e00\u70b9\u7684map value\u53c8\u662f\u4e2amap\n    language := make(map[string]map[string]string)\n    language["php"] = make(map[string]string, 2)\n    language["php"]["id"] = "1"\n    language["php"]["desc"] = "php\u662f\u4e16\u754c\u4e0a\u6700\u7f8e\u7684\u8bed\u8a00"\n    language["golang"] = make(map[string]string, 2)\n    language["golang"]["id"] = "2"\n    language["golang"]["desc"] = "golang\u6297\u5e76\u53d1\u975e\u5e38good"\n\n    fmt.Println(language)\n\n}<\/code><\/pre>\n
map\u7684\u589e\u5220\u6539\u67e5<\/p>\n
func main() {\n    language := make(map[string]map[string]string)\n    language["php"] = make(map[string]string, 2)\n    language["php"]["id"] = "1"\n    language["php"]["desc"] = "php\u662f\u4e16\u754c\u4e0a\u6700\u7f8e\u7684\u8bed\u8a00"\n    language["golang"] = make(map[string]string, 2)\n    language["golang"]["id"] = "2"\n    language["golang"]["desc"] = "golang\u6297\u5e76\u53d1\u975e\u5e38good"\n\n    \/\/fmt.Println(language) \/\/map[php:map[id:1 desc:php\u662f\u4e16\u754c\u4e0a\u6700\u7f8e\u7684\u8bed\u8a00] golang:map[id:2 desc:golang\u6297\u5e76\u53d1\u975e\u5e38good]]\n\n    \/\/\u589e\u5220\u6539\u67e5\n    val, key := language["php"]  \/\/\u67e5\u627e\u662f\u5426\u6709php\u8fd9\u4e2a\u5b50\u5143\u7d20\n    if key {\n        fmt.Printf("%v\\n", val)\n    } else {\n        fmt.Printf("no\\n");\n    }\n\n    \/\/language["php"]["id"] = "3" \/\/\u4fee\u6539\u4e86php\u5b50\u5143\u7d20\u7684id\u503c\n    \/\/language["php"]["nickname"] = "\u556a\u556a\u556a" \/\/\u589e\u52a0php\u5143\u7d20\u91cc\u7684nickname\u503c\n    \/\/delete(language, "php")  \/\/\u5220\u9664\u4e86php\u5b50\u5143\u7d20\n    fmt.Println(language)\n\n}<\/code><\/pre>\n
map\u589e\u5220\u6539\u67e5<\/p>\n
func main() {\n    \/\/\u58f0\u660e\u4e00\u4e2amap\n    city := make(map[string]string)\n\n    \/\/\u589e\u52a0\u5143\u7d20\n    city["usa"] = "newyork"\n    city["japan"] = "tokay"\n    city["uk"] = "london"\n    \/\/fmt.Println(city)\n\n    \/\/\u5220\u9664 \u4f7f\u7528\u5065\u6765\u5220\u9664\n    delete(city, "uk")\n    \/\/fmt.Println(city)\n\n    \/\/\u4fee\u6539\n    city["japan"] = "abc"\n    \/\/fmt.Println(city)\n\n    \/\/\u67e5\u8be2 \u904d\u5386\n    for key, value :=  range city{\n        fmt.Println("key = ", key)\n        fmt.Println("value = ", value)\n    }\n}<\/code><\/pre>\n
\u9762\u5411\u5bf9\u8c61<\/h5>\n
struct \u7ed3\u6784\u4f53<\/h5>\n
struct\u76f8\u5f53\u4e8e\u9762\u5411\u5bf9\u8c61\u8bed\u8a00\u91cc\u7684\u7c7b
\n\u6ce8\u610f:\u7528struct\u6784\u9020\u51fa\u6765\u7684\u6570\u636e(new\u51fa\u6765\u7684\u5bf9\u8c61) \u4f5c\u4e3a\u51fd\u6570\u53c2\u6570\u7684\u8bdd\u662f\u503c\u4f20\u9012
\n\u6ce8\u610f:\u7c7b\u540d\u9996\u5b57\u6bcd\u5927\u5199\u8868\u793a\u5176\u5b83\u5305\u4e5f\u53ef\u4ee5\u8bbf\u95ee \u5c5e\u6027\u540d\u9996\u5b57\u6bcd\u5927\u5199\u8868\u793a\u53ef\u5bf9\u5916\u8bbf\u95ee \u65b9\u6cd5\u540d\u9996\u5b57\u6bcd\u5927\u5199\u8868\u793a\u5176\u5b83\u5305\u53ef\u8bbf\u95ee
\n\u7ed3\u6784\u4f53\u521d\u4f53\u9a8c<\/p>\n
\/\/ \u5b9a\u4e49\u4e00\u4e2a\u7ed3\u6784\u4f53\ntype Book struct {\n    title string\n    auth  string\n}\n\nfunc main() {\n    \/\/\u7528\u7ed3\u6784\u4f53\u6784\u9020\u4e00\u4e2a\u5bf9\u8c61\n    var book1 Book\n    book1.title = "\u597d\u597d\u5b66golang"\n    book1.auth = "\u5f20\u4e09"\n    fmt.Println(book1)\n}<\/code><\/pre>\n
\u7ed9\u7ed3\u6784\u4f53\u52a0\u65b9\u6cd5<\/p>\n
\/\/\u7ed3\u6784\u4f53\u5b9a\u4e49  \u76f8\u5f53\u4e8e\u7c7b\ntype Hero struct{\n    \/\/\u4e24\u4e2a\u5c5e\u6027\n    Name string\n    Age  int\n}\n\n\/\/\u7c7b\u7684\u65b9\u6cd5\u5b9a\u4e49\n\/\/\u8fd9\u91cc\u6700\u597d\u52a0\u4e2a*\u53f7 \u5426\u5219\u4f20\u8fdb\u6765\u7684\u5bf9\u8c61\u662f\u62f7\u8d1d\nfunc (this *Hero) Show(){\n    fmt.Println("name = ", this.Name)\n    fmt.Println("age = ", this.Age)\n}\n\n\/\/\u7c7b\u7684\u65b9\u6cd5\u5b9a\u4e49\n\/\/\u8fd9\u91cc\u6700\u597d\u52a0\u4e2a*\u53f7 \u5426\u5219\u4f20\u8fdb\u6765\u7684\u5bf9\u8c61\u662f\u62f7\u8d1d\nfunc (this *Hero) SetName(name string){\n    this.Name = name\n}\n\nfunc main() {\n    \/\/\u7528\u7ed3\u6784\u4f53\u6784\u9020\u4e00\u4e2a\u5bf9\u8c61\n    hero := Hero{Name: "\u5f20\u4e09", Age: 20}\n    \/\/\u6539\u4e00\u4e0b\u540d\u5b57\n    hero.SetName("\u674e\u56db")\n    \/\/\u67e5\u770b\u4e00\u4e0b\u6539\u6210\u529f\u4e86\n    hero.Show()\n}<\/code><\/pre>\n
golang\u91cc\u9762\u7684\u7c7b\u7ee7\u627f(struct)<\/p>\n
\/\/\u7236\u7c7b\ntype Human struct{\n    Name string\n}\n\n\/\/\u7236\u7c7b\u7684\u65b9\u6cd5\nfunc (this *Human) Eat(){\n    fmt.Println("\u7236\u7c7b\u7684eat\u65b9\u6cd5")\n}\n\n\/\/\u7236\u7c7b\u7684\u65b9\u6cd5\nfunc (this *Human) Walk(){\n    fmt.Println("\u7236\u7c7b\u7684Walk\u65b9\u6cd5")\n}\n\n\/\/====================================\n\/\/\u5b50\u7c7b\ntype Superman struct{\n    \/\/\u7ee7\u627f\u7236\u7c7b,\u76f4\u63a5\u628a\u7236\u7c7b\u5199\u5728\u8fd9\u91cc\u5c31\u884c\n    Human\n\n    \/\/\u518d\u5199\u4e2a\u5b50\u7c7b\u7684\u5c5e\u6027\n    Age string\n}\n\n\/\/\u5b50\u7c7b\u7684\u65b9\u6cd5\nfunc (this *Superman) Run(){\n    fmt.Println("\u5b50\u7c7b\u7684Run\u65b9\u6cd5")\n}\n\n\/\/\u4e5f\u53ef\u4ee5\u91cd\u5199\u7236\u7c7b\u7684\u65b9\u6cd5\nfunc (this *Superman) Walk(){\n    fmt.Println("\u5b50\u7c7b\u91cd\u5199\u4e86\u7236\u7c7b\u7684Walk\u65b9\u6cd5")\n}\n\nfunc main() {\n    \/\/\u7528\u5b50\u7c7b\u6765new\u4e00\u4e2a\u5bf9\u8c61\n    var superman1 Superman\n    superman1.Name = "\u5f20\u4e09"\n    superman1.Age = "100"\n\n    \/\/\u8c03\u7528\u4e00\u4e0b\u7236\u7c7b\u7684\u65b9\u6cd5\n    superman1.Eat()\n\n    \/\/\u8c03\u7528\u4e00\u4e0b\u5b50\u7c7b\u7684\u65b9\u6cd5\n    superman1.Run()\n\n    \/\/\u8c03\u7528\u4e00\u4e0b \u5b50\u7c7b\u91cd\u5199\u7684\u7236\u7c7b\u65b9\u6cd5\n    superman1.Walk()\n\n    \/\/\u518d\u8c03\u7528\u4e00\u4e0b\u5c5e\u6027\n    fmt.Println(superman1.Name)\n    fmt.Println(superman1.Age)\n\n}<\/code><\/pre>\n
interface \u7a7a\u6307\u9488 \u4e07\u80fd\u7c7b\u578b \u7c7b\u578b\u65ad\u8a00
\n\u7a7a\u6307\u9488\u53ef\u4ee5\u63a5\u6536\u4efb\u52a1\u7c7b\u578b\u7684\u53c2\u6570
\n\u7c7b\u578b\u65ad\u8a00\u80fd\u591f\u5224\u65ad\u4f20\u9012\u8fc7\u6765\u6570\u636e\u7684\u7c7b\u578b<\/p>\n
func myfunc(arg interface{}){\n    \/\/\u7c7b\u578b\u65ad\u8a00\n    _, ok := arg.(string)\n    if ok {\n        fmt.Println("\u662fstring\u7c7b\u578b")\n    }\n\n    _, ok = arg.(int)\n    if ok {\n        fmt.Println("\u662fint\u7c7b\u578b")\n    }\n}\n\nfunc main() {\n    myfunc(11)\n}<\/code><\/pre>\n
reflect\u53cd\u5c04<\/h5>\n
\u53cd\u5c04\u83b7\u53d6\u53d8\u91cf\u7684\u7c7b\u578b\u548c\u503c<\/p>\n
func myReflect(arg interface{}){\n    fmt.Println(reflect.TypeOf(arg))\n    fmt.Println(reflect.ValueOf(arg))\n} \n\nfunc main() {\n    myReflect(11)\n}\n<\/code><\/pre>\n
\u5229\u7528reflect\u83b7\u53d6\u7c7b\u7684\u6807\u7b7e<\/p>\n
\/\/ \u5e26\u6807\u7b7e\u7684\u7ed3\u6784\u4f53\ntype Book struct {\n    Name string `info:"\u4e66\u540d"`\n    auth string `info:"\u4f5c\u8005"`\n}\n\n\/\/ \u5199\u4e2a\u51fd\u6570\u6765\u67e5\u8be2\u5bf9\u8c61\u7684\u6807\u7b7e\nfunc findTag(str interface{}) {\n    \/\/\u83b7\u53d6\u5bf9\u8c61\u7684\u5143\u7d20\n    t := reflect.TypeOf(str).Elem()\n    for i := 0; i < t.NumField(); i++ {\n        infoTag := t.Field(i).Tag.Get("info")\n        fmt.Println(infoTag)\n    }\n\n}\n\nfunc main() {\n    book1 := Book{}\n    findTag(&book1)\n}<\/code><\/pre>\n
json<\/h5>\n
\u7ed3\u6784\u4f53\u4e0ejson\u4e92\u8f6c \u4f1a\u7528\u5230\u7ed3\u6784\u4f53\u6807\u7b7e<\/p>\n
import (\n    "encoding\/json"\n    "fmt"\n)\n\n\/\/ \u5b9a\u4e49\u4e2a\u7ed3\u6784\u4f53\ntype Movie struct {\n    Name  string `json:"name"`\n    Year  int    `json:"year"`\n    Price int    `json:"price"`\n}\n\nfunc main() {\n    \/\/\u5b9a\u4e49\u4e00\u4e2a\u7ed3\u6784\u4f53\n    movie1 := Movie{"\u529f\u592b", 2005, 15}\n    \/\/\u7ed3\u6784\u4f53\u8f6cjson\n    jsonStr, err := json.Marshal(movie1)\n    if err != nil {\n        fmt.Println("\u8f6c\u6362json\u5931\u8d25")\n    }\n\n    fmt.Printf("\u8f6c\u6362json\u6210\u529f str=%s\\n", jsonStr)\n\n    \/\/\u518d\u8f6c\u56de\u6765\n    movie2 := Movie{}\n    err = json.Unmarshal(jsonStr, &movie2)\n    if err != nil {\n        fmt.Println("\u8f6c\u6362\u5931\u8d25")\n    }\n    fmt.Println(movie2)\n}<\/code><\/pre>\n
goroutine  \u534f\u7a0b  \u5e76\u53d1<\/h5>\n
\u534f\u7a0b\u521d\u4f53\u9a8c<\/p>\n
import (\n    "fmt"\n    "time"\n)\n\nfunc task() {\n    i := 0\n    for {\n        fmt.Println("\u534f\u7a0b\u91cc\u6267\u884c\u7684=", i)\n        i++\n        time.Sleep(1 * time.Second)\n    }\n}\n\nfunc main() {\n    \/\/\u5f00\u4e00\u4e2ago\u7a0b\n    go task()\n\n    \/\/\u4e3b\u7ebf\u7a0b\n    i := 0\n    for{\n        fmt.Println("\u4e3b\u7ebf\u7a0b\u91cc\u6267\u884c\u7684=", i)\n        i ++\n        time.Sleep(1 * time.Second)\n    }\n}<\/code><\/pre>\n
channel \u7ba1\u9053 \u7528\u4e8e\u534f\u7a0b\u95f4\u901a\u8baf<\/h5>\n
\u6ce8\u610f:\u7ba1\u7406\u5206\u4e3a\u6709\u7f13\u5b58\u548c\u6ca1\u6709\u7f13\u5b58\u4e24\u79cd
\n\u6ca1\u6709\u7f13\u5b58\u7684\u7ba1\u9053\u4f1a\u6709\u963b\u585e\u6548\u679c,\u4e0d\u7ba1\u662f\u5bf9\u4e8e\u63a5\u6536\u8fd8\u662f\u53d1\u9001
\n\u7ba1\u9053\u521d\u4f53\u9a8c<\/p>\n
func main() {\n    \/\/\u5b9a\u4e49\u4e00\u4e2achannel\n    c := make(chan int)\n\n    go func()  {\n        fmt.Println("\u5b50\u534f\u7a0b\u5f00\u59cb\u8fd0\u884c...")\n        defer fmt.Println("\u5b50\u534f\u7a0b\u8fd0\u884c\u7ed3\u675f")\n\n        \/\/\u5b50\u534f\u7a0b\u7ed3\u675f\u540e\u53d1\u9001\u4e2a\u4fe1\u53f7\n        c <- 1\n\n    }()\n\n    \/\/\u4e3b\u534f\u7a0b\u7b49\u5f85\u63a5\u6536\u4fe1\u53f7\n    num := <- c\n    fmt.Println(num)\n    fmt.Println("\u4e3b\u534f\u7a0b\u7ed3\u675f....")\n}<\/code><\/pre>\n
\u56fe\u89e3\u65e0\u7f13\u5b58channel
\n\"file\"
\n\u56fe\u89e3\u6709\u7f13\u5b58channel
\n\"file\"<\/p>\n
\u5e26\u7f13\u5b58\u7684channel\u7b80\u5355\u5e94\u7528
\n\u5e26\u7f13\u5b58\u7684channel\u5f53\u7f13\u5b58\u6ee1\u4e86 \u4e5f\u4f1a\u6709\u963b\u585e\u6548\u679c<\/p>\n
import (\n    "fmt"\n    "time"\n)\n\nfunc main() {\n    \/\/\u5e26\u7f13\u5b58\u7684channel \u5bb9\u91cfcap\u4e3a3  \u957f\u5ea6len\u4e3a0\n    c := make(chan int, 3)\n    \/\/fmt.Printf("cap = %d, len = %d", cap(c), len(c))\n\n    go func()  {\n        defer fmt.Println("\u5b50go\u7a0b\u7ed3\u675f")\n        for i := 0; i < 30; i++ {\n            \/\/\u5411\u7ba1\u9053\u4e2d\u5199\u5165\u6570\u636e\n            c <- i\n            fmt.Println("\u5b50go\u7a0b\u5411\u7ba1\u9053\u4e2d\u5199\u5165\u4e86\u6570\u636e", i)\n        }\n    }()\n\n    time.Sleep(1 * time.Second)\n\n    for i := 0; i < 30; i++ {\n        num := <- c\n        fmt.Println("\u4e3bgo\u7a0b\u4ece\u7ba1\u9053\u4e2d\u8bfb\u53d6\u4e86\u6570\u636e", num)\n    }\n\n    fmt.Println("\u4e3bgo\u7a0b\u7ed3\u675f")\n}\n<\/code><\/pre>\n
\u7528close\u5173\u95ed\u7ba1\u9053\u7684\u7b80\u5355\u5e94\u7528<\/p>\n
func main() {\n    \/\/\u6ca1\u6709\u7f13\u5b58\u7684channel\n    c := make(chan int)\n\n    go func () {\n        for i := 0; i < 5; i++ {\n            \/\/\u5411\u7ba1\u9053\u5199\u5165\u6570\u636e\n            c <- i\n        }\n\n        \/\/\u5173\u95ed\u7ba1\u9053\n        close(c)\n    }()\n\n    for{\n        \/\/\u4e5f\u53ef\u4ee5\u8fd9\u6837\u4ece\u7ba1\u9053\u4e2d\u8bfb\u53d6\u6570\u636e\n        data, ok := <- c\n        if ok {\n            fmt.Println("\u4ece\u7ba1\u9053\u4e2d\u8bfb\u53d6\u7684\u6570\u636e\u662f", data)\n        } else {\n            fmt.Println("\u7ba1\u9053\u5173\u95ed")\n            break\n        }\n    }\n\n    fmt.Println("\u4e3bgo\u7a0b\u7ed3\u675f")\n}<\/code><\/pre>\n
\u4e5f\u53ef\u4ee5\u7528range\u6765 \u904d\u5386 \u4e0d\u65ad\u64cd\u4f5c\u901a\u9053<\/p>\n
func main() {\n    \/\/\u6ca1\u6709\u7f13\u5b58\u7684channel\n    c := make(chan int)\n\n    go func () {\n        for i := 0; i < 5; i++ {\n            \/\/\u5411\u7ba1\u9053\u5199\u5165\u6570\u636e\n            c <- i\n        }\n\n        \/\/\u5173\u95ed\u7ba1\u9053\n        close(c)\n    }()\n\n    \/\/\u4e5f\u53ef\u4ee5\u7528range\u6765 \u4e0d\u65ad\u64cd\u4f5cchannel\n    for data := range c{\n        fmt.Println(data)\n    }\n\n    fmt.Println("\u4e3bgo\u7a0b\u7ed3\u675f")\n}<\/code><\/pre>\n
select\u64cd\u4f5c\u901a\u9053<\/h5>\n
demo<\/p>\n
    select {\n    case <- chan1:\n        \/\/ \u5982\u679cchan1\u6210\u529f\u8bfb\u5230\u6570\u636e\uff0c\u5219\u8fdb\u884c\u8be5case\u5904\u7406\u8bed\u53e5\n    case chan2 <- 1:\n        \/\/ \u5982\u679c\u6210\u529f\u5411chan2\u5199\u5165\u6570\u636e\uff0c\u5219\u8fdb\u884c\u8be5case\u5904\u7406\u8bed\u53e5\n    default:\n        \/\/ \u5982\u679c\u4e0a\u9762\u90fd\u6ca1\u6709\u6210\u529f\uff0c\u5219\u8fdb\u5165default\u5904\u7406\u6d41\u7a0b\n    }<\/code><\/pre>\n
select\u53ef\u4ee5\u540c\u65f6\u76d1\u63a7\u591a\u8defchannel\u7684\u72b6\u6001<\/p>\n
package main\n\nimport (\n    "fmt"\n)\n\nfunc fibonacci(c, quit chan int) {\n    x, y := 1, 1\n    for {\n        select {\n        case c <- x:\n            x, y = y, x+y\n        case <-quit:\n            fmt.Println("quit")\n            return\n        }\n    }\n}\n\nfunc main() {\n    c := make(chan int)\n    quit := make(chan int)\n\n    go func() {\n        for i := 0; i < 6; i++ {\n            fmt.Println(<-c)\n        }\n        quit <- 0\n    }()\n\n    fibonacci(c, quit)\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
golang\u8f93\u51fahelloWorld package main import "fmt&q […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-88","post","type-post","status-publish","format-standard","hentry","category-golang"],"_links":{"self":[{"href":"https:\/\/669082.xyz\/index.php\/wp-json\/wp\/v2\/posts\/88","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/669082.xyz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/669082.xyz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/669082.xyz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/669082.xyz\/index.php\/wp-json\/wp\/v2\/comments?post=88"}],"version-history":[{"count":59,"href":"https:\/\/669082.xyz\/index.php\/wp-json\/wp\/v2\/posts\/88\/revisions"}],"predecessor-version":[{"id":150,"href":"https:\/\/669082.xyz\/index.php\/wp-json\/wp\/v2\/posts\/88\/revisions\/150"}],"wp:attachment":[{"href":"https:\/\/669082.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=88"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/669082.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=88"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/669082.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=88"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}