{"id":10008352,"date":"2024-02-11T19:56:06","date_gmt":"2024-02-11T11:56:06","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008352"},"modified":"2024-02-11T19:56:06","modified_gmt":"2024-02-11T11:56:06","slug":"go1-22-%e6%ad%a3%e5%bc%8f%e5%8f%91%e5%b8%83%ef%bc%81%e5%8c%85%e5%90%ab%e8%af%ad%e8%a8%80%e5%8f%98%e5%8c%96%e3%80%81%e6%80%a7%e8%83%bd%e6%8f%90%e9%ab%98%e3%80%81%e6%a0%87%e5%87%86%e5%ba%93%e5%8f%98","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008352","title":{"rendered":"Go1.22 \u6b63\u5f0f\u53d1\u5e03\uff01\u5305\u542b\u8bed\u8a00\u53d8\u5316\u3001\u6027\u80fd\u63d0\u9ad8\u3001\u6807\u51c6\u5e93\u53d8\u52a8\u7b49\u91cd\u8981\u7279\u6027"},"content":{"rendered":"

\u5927\u5bb6\u597d\uff0c\u6211\u662f\u714e\u9c7c\u3002<\/p>\n

\u4eca\u5929 Go1.22 \u6b63\u5f0f\u53d1\u5e03\u4e86\uff01<\/strong><\/p>\n

\u4e00\u65e9\u8d77\u6765\uff0c\u8fd8\u6ca1\u51fa\u95e8\u5c31\u8d76\u7d27\u6574\u7406\u4e86\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u3002\u4e00\u8d77\u5b66\u4e60\u65b0\u7248\u672c\uff01<\/p>\n

\u4e4b\u524d\u6211\u8fd8\u770b\u8fdb\u5ea6\u9884\u6d4b 2 \u6708\u4e2d\u53d1\u5e03\u3002\u6ca1\u60f3\u5230\u76f4\u63a5\u6253\u8138\u3002Go \u6838\u5fc3\u56e2\u961f\u6210\u529f\u8d76\u5728\u6625\u8282\u524d\u53d1\u5e03\u4e86\uff01\u771f\u662f\u6709\u70b9\u731b\u3002<\/p>\n

Go 1.22 \u65b0\u7248\u672c\u5b89\u88c5\u65b9\u5f0f\uff1a<\/p>\n

\"\"<\/p>\n

Go1.22 \u5305\u542b\u591a\u9879\u91cd\u8981\u7684\u65b0\u529f\u80fd\u548c\u6539\u8fdb\u3002\u4ee5\u4e0b\u662f\u90e8\u5206\u663e\u8457\u53d8\u5316\uff1b\u5b8c\u6574\u5217\u8868\u8bf7\u67e5\u770b\u300aGo 1.22 Release Notes\u300b\u3002<\/p>\n

\u6b22\u8fce\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u65b0\u7248\u672c\u7279\u6027\u548c\u5185\u5bb9\uff01<\/p>\n

\u5b98\u65b9\u6982\u8ff0<\/h2>\n

\u8bed\u8a00\u53d8\u5316<\/h3>\n

\u957f\u671f\u5b58\u5728\u7684 “for “\u5faa\u73af\u5728\u8fed\u4ee3\u4e4b\u95f4\u610f\u5916\u5171\u4eab\u5faa\u73af\u53d8\u91cf\u7684\u95ee\u9898\u73b0\u5df2\u5f97\u5230\u89e3\u51b3\u3002<\/p>\n

\u4ece Go 1.22 \u5f00\u59cb\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5c06\u6309\u4e00\u5b9a\u987a\u5e8f\u6253\u5370 “a”\u3001”b “\u548c “c”\uff1a<\/p>\n

func main() {\n    done := make(chan bool)\n\n    values := []string{"a", "b", "c"}\n    for _, v := range values {\n        go func() {\n            fmt.Println(v)\n            done <- true\n        }()\n    }\n\n    \/\/ wait for all goroutines to complete before exiting\n    for _ = range values {\n        <-done\n    }\n}<\/code><\/pre>\n
\u6709\u5173\u8fd9\u4e00\u53d8\u66f4\u4ee5\u53ca\u6709\u52a9\u4e8e\u9632\u6b62\u4ee3\u7801\u610f\u5916\u4e2d\u65ad\u7684\u5de5\u5177\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u4e4b\u524d\u7684\u300aFixing For Loops in Go 1.22<\/a>\u300b\u3002<\/p>\n
\u7b2c\u4e8c\u4e2a\u8bed\u8a00\u53d8\u5316\u662f\u652f\u6301\u6574\u6570\u8303\u56f4\uff1a<\/p>\n
package main\n\nimport "fmt"\n\nfunc main() {\n    for i := range 10 {\n        fmt.Println(10 - i)\n    }\n    fmt.Println("go1.22 has lift-off!")\n}<\/code><\/pre>\n
\u7b2c\u4e8c\u4e2a\u8bed\u8a00\u53d8\u5316\u662f\u652f\u6301\u6574\u6570\u8303\u56f4\uff1aa \u5728\u8fd9\u4e2a\u5012\u8ba1\u65f6\u7a0b\u5e8f\u4e2d\uff0ci \u7684\u53d6\u503c\u8303\u56f4\u4e3a 0 \u81f3 9\uff08\u542b 9\uff09\u3002<\/p>\n
\u6027\u80fd\u63d0\u9ad8<\/h3>\n
Go \u8fd0\u884c\u65f6\u4e2d\u7684\u5185\u5b58\u4f18\u5316\u53ef\u5c06 CPU \u6027\u80fd\u63d0\u9ad8 1-3%\uff0c\u540c\u65f6\u8fd8\u53ef\u5c06\u5927\u591a\u6570 Go \u7a0b\u5e8f\u7684\u5185\u5b58\u5f00\u9500\u51cf\u5c11\u7ea6 1%\u3002<\/p>\n
\u5728 Go 1.21 \u4e2d\uff0c\u6211\u4eec\u4e3a Go \u7f16\u8bd1\u5668\u63d0\u4f9b\u4e86\u914d\u7f6e\u6587\u4ef6\u5f15\u5bfc\u4f18\u5316 (PGO)\uff0c\u800c\u4e14\u8fd9\u4e00\u529f\u80fd\u8fd8\u5728\u4e0d\u65ad\u6539\u8fdb\u3002<\/p>\n
Go 1.22 \u4e2d\u65b0\u589e\u7684\u4f18\u5316\u4e4b\u4e00\u662f\u6539\u8fdb\u4e86\u865a\u62df\u5316\uff0c\u5141\u8bb8\u9759\u6001\u8c03\u5ea6\u66f4\u591a\u7684\u63a5\u53e3\u65b9\u6cd5\u8c03\u7528\u3002\u542f\u7528 PGO \u540e\uff0c\u5927\u591a\u6570\u7a0b\u5e8f\u7684\u6027\u80fd\u5c06\u63d0\u9ad8 2% \u81f3 14%\u3002<\/p>\n
\u6807\u51c6\u5e93\u53d8\u52a8<\/h3>\n