{"id":16,"date":"2022-11-18T17:26:49","date_gmt":"2022-11-18T09:26:49","guid":{"rendered":"https:\/\/www.road-trip.cc\/?p=16"},"modified":"2024-05-06T16:04:03","modified_gmt":"2024-05-06T08:04:03","slug":"lua-programming-language","status":"publish","type":"post","link":"https:\/\/www.road-trip.cc\/?p=16","title":{"rendered":"Lua Programming Language"},"content":{"rendered":"\n<p><strong>\u751f\u6210\u4e00\u4e2a\u968f\u673a\u6570<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code has-tertiary-background-color has-background\" style=\"border-width:1px\"><code>function GetTrueRandom(min,max)\n    --\u5f97\u5230\u65f6\u95f4\u5b57\u7b26\u4e32\n    local strTime=tostring(os.time())\n    --\u5f97\u5230\u4e00\u4e2a\u53cd\u8f6c\u5b57\u7b26\u4e32\n    local strRev=string.reverse(strTime)\n    --\u5f97\u5230\u524d6\u4f4d\n    local strRandomTime=string.sub(strRev, 1, 6)\n \n    --\u8bbe\u7f6e\u65f6\u95f4\u79cd\u5b50\n    math.randomseed(strRandomTime)\n    --\u8f93\u51fa\u968f\u673a\u6570\n    --print(\"#\u968f\u673a\u6570=\",math.random(min, max))\n    return math.random(min, max)\nend<\/code><\/pre>\n\n\n\n<p><strong>\u4fdd\u5b58\u6587\u4ef6<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>&#8220;<code>r<\/code>&#8220;:&nbsp;<\/strong>read mode (the default);<\/li>\n\n\n\n<li><strong>&#8220;<code>w<\/code>&#8220;:&nbsp;<\/strong>write mode;<\/li>\n\n\n\n<li><strong>&#8220;<code>a<\/code>&#8220;:&nbsp;<\/strong>append mode;<\/li>\n\n\n\n<li><strong>&#8220;<code>r+<\/code>&#8220;:&nbsp;<\/strong>update mode, all previous data is preserved;<\/li>\n\n\n\n<li><strong>&#8220;<code>w+<\/code>&#8220;:&nbsp;<\/strong>update mode, all previous data is erased;<\/li>\n\n\n\n<li><strong>&#8220;<code>a+<\/code>&#8220;:&nbsp;<\/strong>append update mode, previous data is preserved, writing is only allowed at the end of file.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code has-tertiary-background-color has-background\" style=\"border-width:1px\"><code>local fp, err = io.open(filename, mode)\nif err ~= nil {\n    -- check error status\n}\nfp:write(data)\nfp:close()<\/code><\/pre>\n\n\n\n<p><strong>nginx\u6253\u5370\u65e5\u5fd7\uff1a<\/strong><\/p>\n\n\n\n<p>nginx log \u65e5\u5fd7\u7ea7\u522b<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">   ngx.STDERR\n   ngx.EMERG\n   ngx.ALERT\n   ngx.CRIT\n   ngx.ERR\n   ngx.WARN\n   ngx.NOTICE\n   ngx.INFO\n   ngx.DEBUG<\/pre>\n\n\n\n<pre class=\"wp-block-code has-tertiary-background-color has-background\" style=\"border-width:1px\"><code>ngx.log(ngx.ERR, message)<\/code><\/pre>\n\n\n\n<p><strong>ngx log\u7684\u5751<\/strong><\/p>\n\n\n\n<p><strong>\u51fa\u4e8e\u6027\u80fd\u8003\u8651\uff0cngx log \u6700\u591a\u80fd\u6253\u5370\u7684\u65e5\u5fd7\u957f\u5ea6\u4e3a2K\u5b57\u8282\uff0c\u591a\u4f59\u7684\u4f1a\u88ab\u622a\u65ad\u3002<\/strong><\/p>\n\n\n\n<p><strong>\u89e3\u538b\u7f29gzip\u538b\u7f29\u7684\u6570\u636e<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code has-tertiary-background-color has-background\" style=\"border-width:1px\"><code>local zip = require(\"zlib\")\n\nlocal stream = zlib.inflate()\nlocal decompress_data = stream(compressed_data)<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u751f\u6210\u4e00\u4e2a\u968f\u673a\u6570 \u4fdd\u5b58\u6587\u4ef6 nginx\u6253\u5370\u65e5\u5fd7\uff1a nginx log \u65e5\u5fd7\u7ea7\u522b ngx.STDERR ngx.E &#8230; <a title=\"Lua Programming Language\" class=\"read-more\" href=\"https:\/\/www.road-trip.cc\/?p=16\" aria-label=\"\u9605\u8bfb Lua Programming Language\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[9],"class_list":["post-16","post","type-post","status-publish","format-standard","hentry","category-7","tag-lua"],"_links":{"self":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts\/16","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16"}],"version-history":[{"count":3,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts\/16\/revisions"}],"predecessor-version":[{"id":21,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts\/16\/revisions\/21"}],"wp:attachment":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}