{"id":655,"date":"2024-02-01T14:00:15","date_gmt":"2024-02-01T06:00:15","guid":{"rendered":"https:\/\/www.db2go.net\/?p=655"},"modified":"2024-02-01T14:01:53","modified_gmt":"2024-02-01T06:01:53","slug":"%e5%88%9d%e6%8e%a2golang%e6%b3%9b%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/www.db2go.net\/?p=655","title":{"rendered":"\u521d\u63a2Golang\u6cdb\u578b"},"content":{"rendered":"<p>\u5728Go\u8bed\u8a00\u4e2d\uff0c\u6cdb\u578b\u662f\u6307\u4e00\u79cd\u901a\u7528\u7684\u7f16\u7a0b\u7279\u6027\uff0c\u5141\u8bb8\u5728\u4e0d\u6307\u5b9a\u5177\u4f53\u7c7b\u578b\u7684\u60c5\u51b5\u4e0b\u7f16\u5199\u4ee3\u7801\u3002\u5728\u4e4b\u524d\u7684Go\u7248\u672c\u4e2d\uff0c\u8be5\u8bed\u8a00\u662f\u6ca1\u6709\u6cdb\u578b\u652f\u6301\u7684\uff0c\u4f46\u81eaGo 1.18\u7248\u672c\u5f00\u59cb\uff0c\u5f15\u5165\u4e86\u6cdb\u578b\u652f\u6301\u3002<\/p>\n<p>\u6cdb\u578b\u7684\u5f15\u5165\u4e3b\u8981\u662f\u4e3a\u4e86\u89e3\u51b3\u5728\u7f16\u5199\u901a\u7528\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784\u65f6\u6240\u9762\u4e34\u7684\u7c7b\u578b\u5b89\u5168\u548c\u4ee3\u7801\u91cd\u590d\u7684\u95ee\u9898\u3002\u5728\u6ca1\u6709\u6cdb\u578b\u7684\u60c5\u51b5\u4e0b\uff0c\u5f00\u53d1\u4eba\u5458\u901a\u5e38\u9700\u8981\u4f7f\u7528\u63a5\u53e3\u6216\u5177\u4f53\u7c7b\u578b\u8fdb\u884c\u5904\u7406\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u4ee3\u7801\u53d8\u5f97\u5197\u957f\u3001\u96be\u4ee5\u7406\u89e3\uff0c\u5e76\u4e14\u53ef\u80fd\u5e26\u6765\u6027\u80fd\u635f\u5931\u3002<\/p>\n<p>\u5f15\u5165\u6cdb\u578b\u7684\u597d\u5904\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u4ee3\u7801\u91cd\u7528\u6027\uff1a 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swappedB)\n\n    c, d := \"ni\", \"wo\"\n    swappedC, swappedD := Swap(c, d)\n    fmt.Printf(\"Original: c=%s, c=%s\\n\", c, d)\n    fmt.Printf(\"Swapped: c=%s, d=%s\\n\", swappedC, swappedD)\n}\n<\/code><\/pre>\n<h3>\u6cdb\u578b\u5207\u7247\u64cd\u4f5c<\/h3>\n<pre><code class=\"language-go line-numbers\">\/*\n*\u6cdb\u578b\u5207\u7247\u64cd\u4f5c\n\u4f7f\u7528\u6cdb\u578b\u51fd\u6570\u5904\u7406\u4e0d\u540c\u7c7b\u578b\u7684\u5207\u7247\uff0c\u901a\u8fc7\u4f20\u9012\u4e0d\u540c\u7684\u5207\u7247\u548c\u5224\u65ad\u6761\u4ef6\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5b9e\u73b0\u901a\u7528\u7684\u8fc7\u6ee4\u64cd\u4f5c\n*\/\n\n\/*\n*\nslice []T\uff1a\u4e00\u4e2a\u6cdb\u578b\u5207\u7247\uff0c\u53ef\u4ee5\u5305\u542b\u4efb\u610f\u7c7b\u578b\u7684\u5143\u7d20\u3002\npredicate func(T) bool\uff1a\u4e00\u4e2a\u7528\u4e8e\u5224\u65ad\u5143\u7d20\u662f\u5426\u6ee1\u8db3\u6761\u4ef6\u7684\u51fd\u6570\uff0c\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\u3002\n*\/\nfunc Filter[T any](slice []T, predicate func(T) bool) []T {\n    var result []T \/\/\u521b\u5efa\u4e86\u4e00\u4e2a\u7a7a\u7684\u5207\u7247result\uff0c\u7136\u540e\u904d\u5386\u8f93\u5165\u7684\u5207\u7247slice\u3002\n    for _, value := range slice {\n        \/\/\u5bf9\u4e8e\u6bcf\u4e2a\u5143\u7d20\uff0c\u901a\u8fc7predicate\u51fd\u6570\u5224\u65ad\u662f\u5426\u6ee1\u8db3\u6761\u4ef6\uff0c\u5982\u679c\u6ee1\u8db3\u6761\u4ef6\u5219\u5c06\u5143\u7d20\u8ffd\u52a0\u5230result\u4e2d\u3002\n        if predicate(value) {\n            result = append(result, value)\n        }\n    }\n    \/\/\u8fd4\u56de\u8fc7\u6ee4\u540e\u7684\u5207\u7247result\n    return result\n}\n\nfunc TestSliceGeneric(t *testing.T) {\n    \/\/\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u6574\u6570\u7684\u5207\u7247numbers\n    numbers := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}\n    \/\/\u901a\u8fc7\u8c03\u7528Filter\u51fd\u6570\uff0c\u4f20\u5165\u5207\u7247\u548c\u4e00\u4e2a\u7528\u4e8e\u5224\u65ad\u5076\u6570\u7684\u533f\u540d\u51fd\u6570\u4f5c\u4e3apredicate\uff0c\n    \/\/\u83b7\u5f97\u4e86\u8fc7\u6ee4\u540e\u7684\u5207\u7247evens\u3002\n    evens := Filter(numbers, func(n int) bool {\n        return n%2 == 0\n    })\n    fmt.Println(\"Even numbers:\", evens)\n}\n<\/code><\/pre>\n<h3>\u6cdb\u578b\u6570\u636e\u7ed3\u6784<\/h3>\n<pre><code class=\"language-go line-numbers\">\/*\n*\u6cdb\u578b\u6570\u636e\u7ed3\u6784\n *\/\ntype Stack[T any] struct {\n    items []T\n}\n\nfunc (s *Stack[T]) Push(item T) {\n    s.items = append(s.items, item)\n}\n\nfunc (s *Stack[T]) Pop() T {\n    if len(s.items) == 0 {\n        panic(\"stack is empty\")\n    }\n    item := s.items[len(s.items)-1]\n    s.items = s.items[:len(s.items)-1]\n    return item\n}\n\nfunc TestStructGeneric(t *testing.T) {\n    stringStack := Stack[string]{}\n    stringStack.Push(\"first\")\n    stringStack.Push(\"second\")\n    fmt.Println(\"Popped:\", stringStack.Pop())\n\n    intStack := Stack[int]{}\n    intStack.Push(42)\n    intStack.Push(99)\n    fmt.Println(\"Popped:\", intStack.Pop())\n}\n<\/code><\/pre>\n<h3>\u4f7f\u7528\u6cdb\u578b\u524d\u540e\u4ee3\u7801\u5bf9\u6bd4<\/h3>\n<pre><code class=\"language-go line-numbers\">\/**\n\u524d\u540e\u5bf9\u6bd4\n*\/\n\nvar intSlice = []int{1, 2, 3, 4, 5}\n\n\/\/ \u4e0d\u4f7f\u7528\u6cdb\u578b\u7684\u5207\u7247\u53cd\u8f6c\nfunc reverseIntSlice(slice []int) []int {\n    length := len(slice)\n    reversed := make([]int, length)\n\n    for i, value := range slice {\n        reversed[length-i-1] = value\n    }\n\n    return reversed\n}\n\nfunc TestBeforeGeneric(t *testing.T) {\n    reversed := reverseIntSlice(intSlice)\n    fmt.Println(\"Original Slice:\", intSlice)\n    fmt.Println(\"Reversed Slice:\", reversed)\n}\n\n\/\/ \u4f7f\u7528\u6cdb\u578b\u7684\u5207\u7247\u53cd\u8f6c\nfunc reverseSlice[T any](slice []T) []T {\n    length := len(slice)\n    reversed := make([]T, length)\n\n    for i, value := range slice {\n        reversed[length-i-1] = value\n    }\n\n    return reversed\n}\n\n\/*\n*\n\u4f7f\u7528\u6cdb\u578b\u7684\u65b9\u5f0f\u4f7f\u5f97reverseSlice\u51fd\u6570\u53ef\u4ee5\u63a5\u53d7\u4e0d\u540c\u7c7b\u578b\u7684\u5207\u7247\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662fint\u7c7b\u578b\n*\/\nfunc TestAfterGeneric(t *testing.T) {\n\n    reversedIntSlice := reverseSlice(intSlice)\n    fmt.Println(\"Original Slice:\", intSlice)\n    fmt.Println(\"Reversed Slice:\", reversedIntSlice)\n\n    stringSlice := []string{\"\u9999\u8549\", \"\u82f9\u679c\", \"\u54c8\u5bc6\u74dc\"}\n    reversedStringSlice := reverseSlice(stringSlice)\n    fmt.Println(\"Original Slice:\", stringSlice)\n    fmt.Println(\"Reversed Slice:\", reversedStringSlice)\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Go\u8bed\u8a00\u4e2d\uff0c\u6cdb\u578b\u662f\u6307\u4e00\u79cd\u901a\u7528\u7684\u7f16\u7a0b\u7279\u6027\uff0c\u5141\u8bb8\u5728\u4e0d\u6307\u5b9a\u5177\u4f53\u7c7b\u578b\u7684\u60c5\u51b5\u4e0b\u7f16\u5199\u4ee3\u7801\u3002\u5728\u4e4b\u524d\u7684Go\u7248\u672c\u4e2d\uff0c\u8be5\u8bed\u8a00\u662f\u6ca1&hellip;<\/p>\n <a href=\"https:\/\/www.db2go.net\/?p=655\" title=\"\u521d\u63a2Golang\u6cdb\u578b\" class=\"entry-more-link\"><span>Read More<\/span> <span class=\"screen-reader-text\">\u521d\u63a2Golang\u6cdb\u578b<\/span><\/a>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"Layout":"","footnotes":""},"categories":[12],"tags":[],"class_list":["entry","author-suredandan","post-655","post","type-post","status-publish","format-standard","category-golang"],"views":1677,"_links":{"self":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts\/655","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=655"}],"version-history":[{"count":2,"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts\/655\/revisions"}],"predecessor-version":[{"id":657,"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts\/655\/revisions\/657"}],"wp:attachment":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}