{"id":3311,"date":"2020-05-13T10:33:44","date_gmt":"2020-05-13T01:33:44","guid":{"rendered":"https:\/\/www.cotegg.com\/blog\/?p=3311"},"modified":"2020-05-13T10:51:58","modified_gmt":"2020-05-13T01:51:58","slug":"%e3%80%90golang%e3%80%91package-strconv%e3%81%aeintsize-32-63%e3%81%af%e4%bd%95%e3%82%92%e3%81%97%e3%81%a6%e3%81%84%e3%82%8b%e3%81%ae%e3%81%8b","status":"publish","type":"post","link":"https:\/\/www.cotegg.com\/blog\/?p=3311","title":{"rendered":"\u3010Golang\u3011package strconv\u306eintSize = 32 &lt;&lt; (&and;uint(0) &gt;&gt; 63)\u306f\u4f55\u3092\u3057\u3066\u3044\u308b\u306e\u304b"},"content":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f<\/p>\n<p>Go\u306estrconv\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u8aad\u3093\u3067\u305f\u3089intSize\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\nconst intSize = 32 &lt;&lt; (^uint(0) &gt;&gt; 63)\r\n<\/pre>\n<p>intSize\u306fAtoi\u30e1\u30bd\u30c3\u30c9\u5185\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\nif intSize == 32 &amp;&amp; (0 &lt; sLen &amp;&amp; sLen &lt; 10) || intSize == 64 &amp;&amp; (0 &lt; sLen &amp;&amp; sLen &lt; 19)\r\n<\/pre>\n<p>\u898b\u305f\u611f\u3058intSize\u306b\u306f32\u304b64\u304c\u4ee3\u5165\u3055\u308c\u308b\u3067\u3042\u308d\u3046\u3068\u3044\u3046\u3053\u3068\u306f\u5206\u304b\u308b\u306e\u3067\u3059\u304c\u3001\u306a\u305c\u305d\u306e\u5f0f\u306b\u306a\u308b\u306e\u304b\u304c\u5206\u304b\u3089\u306a\u3063\u305f\u306e\u3067\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<p><code>&lt;&lt;<\/code>\u3068<code>&gt;&gt;<\/code>\u306f\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u3067\u3059\u3002<code>&lt;&lt;<\/code>\u304c\u5de6\u30b7\u30d5\u30c8\u6f14\u7b97\u3067<code>&gt;&gt;<\/code>\u304c\u53f3\u30b7\u30d5\u30c8\u6f14\u7b97\u3067\u3059\u3002<br \/>\n<code>^<\/code>\u306f\u30d3\u30c3\u30c8\u6f14\u7b97(XOR)\u3067\u3059\u3002<\/p>\n<p>\u4f7f\u3044\u65b9\u306f\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\npackage main\r\n\r\nimport &quot;fmt&quot;\r\n\r\nconst (\r\n\tA uint8 = 44\r\n)\r\n\r\nfunc main() {\r\n\ta := fmt.Sprintf(&quot;2\u9032\u6570: %b, 10\u9032\u6570: %d&quot;, A, A)\r\n\tfmt.Println(a)\r\n\t\/\/ 2\u9032\u6570: 00101100, 10\u9032\u6570: 44\r\n\r\n\tl := A &lt;&lt; 2\r\n\tb := fmt.Sprintf(&quot;2\u9032\u6570: %b, 10\u9032\u6570: %d&quot;, l, l)\r\n\tfmt.Println(b)\r\n\t\/\/ 2\u9032\u6570: 10110000, 10\u9032\u6570: 176\r\n\r\n\tr := A &gt;&gt; 2\r\n\tc := fmt.Sprintf(&quot;2\u9032\u6570: %b, 10\u9032\u6570: %d&quot;, r, r)\r\n\tfmt.Println(c)\r\n\t\/\/ 2\u9032\u6570: 1011, 10\u9032\u6570: 11\r\n\r\n\td := fmt.Sprintf(&quot;2\u9032\u6570: %b, 10\u9032\u6570: %d&quot;, ^A, ^A)\r\n\tfmt.Println(d)\r\n\t\/\/ 2\u9032\u6570: 11010011, 10\u9032\u6570: 211\r\n}\r\n<\/pre>\n<p><code>^<\/code>\u306f\u6574\u6570\u6f14\u7b97\u5b50\u3068\u3057\u3066\u3082\u7528\u610f\u3055\u308c\u3066\u3044\u3066\u53cd\u8ee2\u306e\u610f\u5473\u306b\u306a\u308a\u307e\u3059\u300244\u306e2\u9032\u6570\u3001<code>00101100<\/code>\u3092\u53cd\u8ee2\u3059\u308b\u3068<code>11010011<\/code>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u516c\u5f0f\u3067\u306f\u3053\u306e\u3088\u3046\u306b\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote><p>\n  ^x bitwise complement    is m ^ x  with m = &#8220;all bits set to 1&#8221; for unsigned x and  m = -1 for signed x\n<\/p><\/blockquote>\n<p>m\u306b\u306f\u6bce\u56de1\u304c\u30bb\u30c3\u30c8\u3055\u308c\u30011\u30d3\u30c3\u30c8\u6bce\u306b\u6392\u4ed6\u7684\u8ad6\u7406\u548c\u6f14\u7b97\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u6392\u4ed6\u7684\u8ad6\u7406\u548c\u6f14\u7b97\u306f<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n0 XOR 0 = 0\n0 XOR 1 = 1\n1 XOR 0 = 1\n1 XOR 1 = 0\n<\/pre>\n<p>\u3068\u3044\u3046\u6027\u8cea\u3092\u6301\u3061\u307e\u3059\u3002<\/p>\n<p>\u5148\u7a0b\u306e^A\u3067\u3044\u3046\u3068<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n1 ^ 0 = 1\n1 ^ 0 = 1\n1 ^ 1 = 0\n1 ^ 0 = 1\n1 ^ 1 = 0\n1 ^ 1 = 0\n1 ^ 0 = 1\n1 ^ 0 = 1\n<\/pre>\n<p>\u3092\u5185\u90e8\u3067\u884c\u3063\u3066\u304a\u308a\u3001\u7d50\u679c<code>11010011<\/code>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u307e\u3067\u306f\u5206\u304b\u308c\u3070\u5f0f\u3067\u4f55\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u306e\u304b\u304c\u5206\u304b\u308a\u307e\u3059\u3002<br \/>\n\u305d\u308c\u3067\u306f\u5143\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306b\u623b\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconst intSize = 32 &lt;&lt; (^uint(0) &gt;&gt; 63)\n<\/pre>\n<p>\u6700\u521d\u306b\u5b9f\u884c\u3055\u308c\u308b\u306e\u306f<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n(^uint(0) &gt;&gt; 63)\n<\/pre>\n<p>\u306e\u90e8\u5206\u3067\u305d\u306e\u5f8c\u306b<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n32 &lt;&lt; \u4e0a\u8a18\u306e\u8a08\u7b97\u7d50\u679c\n<\/pre>\n<p>\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>uint\u306f\u74b0\u5883\u4f9d\u5b58\u3067\u300132bit\u304b64bit\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u4e0b\u8a18\u306e2\u3064\u304c\u305d\u308c\u305e\u308c\u306e\u8a08\u7b97\u7d50\u679c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>uint\u304c32bit\u306e\u5834\u5408<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nuint(0) 32bit0\u57cb\u3081\u306b\u3059\u308b\n0000 0000 0000 0000 0000 0000 0000 0000\n\n^uint(0) \u53cd\u8ee2\u3059\u308b\n1111 1111 1111 1111 1111 1111 1111 1111\n\n^uint(0) &gt;&gt; 63 \u53f3\u30b7\u30d5\u30c8\u6f14\u7b97\u306763bit\u30b7\u30d5\u30c8\u3055\u305b\u308b\u3002\u7d50\u679c0\u306b\u306a\u308b\n0000 0000 0000 0000 0000 0000 0000 0000\n\n\u5de6\u30b7\u30d5\u30c8\u6f14\u7b97\n32 &lt;&lt; 0 = 32\nintSize = 32\n<\/pre>\n<p>uint\u304c64bit\u306e\u5834\u5408<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nuint(0) 64bit0\u57cb\u3081\u306b\u3059\u308b\n0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000\n\n^uint(0) \u53cd\u8ee2\u3059\u308b\n1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111\n\n^uint(0) &gt;&gt; 63 \u53f3\u30b7\u30d5\u30c8\u6f14\u7b97\u306763bit\u30b7\u30d5\u30c8\u3055\u305b\u308b\u3002\u7d50\u679c1\u306b\u306a\u308b\n0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0001\n\n\u5de6\u30b7\u30d5\u30c8\u6f14\u7b97\n32 &lt;&lt; 1 = 64\nintSize = 64\n<\/pre>\n<p>\u7d50\u679cintSize\u306b\u306f32\u304b64\u304c\u4ee3\u5165\u3055\u308c\u307e\u3059\u3002<br \/>\n\u30b9\u30de\u30fc\u30c8\uff01\uff01<\/p>\n<p>\u6700\u521d\u898b\u305f\u6642\u306f\u3088\u304f\u5206\u304b\u3089\u306a\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u8abf\u3079\u3066\u307f\u305f\u3089\u3068\u3066\u3082\u9762\u767d\u304b\u3063\u305f\u3067\u3059\u3002<br \/>\n\u5f15\u304d\u7d9a\u304dGo\u306e\u30bd\u30fc\u30b9\u30ea\u30fc\u30c7\u30a3\u30f3\u30b0\u306f\u3057\u3066\u3044\u304f\u306e\u3067\u3001\u307e\u305f\u9762\u767d\u3044\u3082\u306e\u304c\u3042\u3063\u305f\u3089\u30d6\u30ed\u30b0\u306b\u66f8\u3044\u3066\u3044\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u53c2\u8003URL<br \/>\n&#8211; <a href=\"https:\/\/golang.org\/ref\/spec#Arithmetic_operators\">The Go Programming Language Specification<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f Go\u306estrconv\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u8aad\u3093\u3067\u305f\u3089intSize\u3068\u3044\u3046\u3082\u306e &#8230; <\/p>\n","protected":false},"author":101012,"featured_media":3317,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[7],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.13 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010Golang\u3011package strconv\u306eintSize = 32 \uff1c\uff1c (^uint(0) \uff1e\uff1e 63)\u306f\u4f55\u3092\u3057\u3066\u3044\u308b\u306e\u304b | \u30b3\u30fc\u30c6\u30c3\u30b0\u306e\u30d0\u30b1\u30c4<\/title>\n<meta name=\"description\" content=\"\u3053\u3093\u306b\u3061\u306f Go\u306estrconv\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u8aad\u3093\u3067\u305f\u3089intSize\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u898b\u305f\u611f\u3058intSize\u306b\u306f32\u304b64\u304c\u4ee3\u5165\u3055\u308c\u308b\u3067\u3042\u308d\u3046\u3068\u3044\u3046\u3053\u3068\u306f\u5206\u304b\u308b\u306e\u3067\u3059\u304c\u3001\u306a\u305c\u305d\u306e\u5f0f\u306b\u306a\u308b\u306e\u304b\u304c\u5206\u304b\u3089\u306a\u3063\u305f\u306e\u3067\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cotegg.com\/blog\/?p=3311\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Golang\u3011package strconv\u306eintSize = 32 \uff1c\uff1c (^uint(0) \uff1e\uff1e 63)\u306f\u4f55\u3092\u3057\u3066\u3044\u308b\u306e\u304b | \u30b3\u30fc\u30c6\u30c3\u30b0\u306e\u30d0\u30b1\u30c4\" \/>\n<meta property=\"og:description\" content=\"\u3053\u3093\u306b\u3061\u306f Go\u306estrconv\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u8aad\u3093\u3067\u305f\u3089intSize\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u898b\u305f\u611f\u3058intSize\u306b\u306f32\u304b64\u304c\u4ee3\u5165\u3055\u308c\u308b\u3067\u3042\u308d\u3046\u3068\u3044\u3046\u3053\u3068\u306f\u5206\u304b\u308b\u306e\u3067\u3059\u304c\u3001\u306a\u305c\u305d\u306e\u5f0f\u306b\u306a\u308b\u306e\u304b\u304c\u5206\u304b\u3089\u306a\u3063\u305f\u306e\u3067\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cotegg.com\/blog\/?p=3311\" \/>\n<meta property=\"og:site_name\" content=\"\u30b3\u30fc\u30c6\u30c3\u30b0\u306e\u30d0\u30b1\u30c4\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/COTegg.japan\/\" \/>\n<meta property=\"article:published_time\" content=\"2020-05-13T01:33:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-05-13T01:51:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.cotegg.com\/blog\/wp-content\/uploads\/2020\/05\/go.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"960\" \/>\n\t<meta property=\"og:image:height\" content=\"504\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"asakos\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@cotegg_japan\" \/>\n<meta name=\"twitter:site\" content=\"@cotegg_japan\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"asakos\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.cotegg.com\/blog\/?p=3311#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.cotegg.com\/blog\/?p=3311\"},\"author\":{\"name\":\"asakos\",\"@id\":\"https:\/\/www.cotegg.com\/blog\/#\/schema\/person\/eabce460c5ae1b67a47e64637cb2ec3f\"},\"headline\":\"\u3010Golang\u3011package strconv\u306eintSize = 32 &lt;&lt; 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