{"id":9997,"date":"2022-09-23T14:20:08","date_gmt":"2022-09-23T06:20:08","guid":{"rendered":"https:\/\/blog.ywdevops.cn\/?p=9997"},"modified":"2024-11-19T12:15:04","modified_gmt":"2024-11-19T04:15:04","slug":"go-26","status":"publish","type":"post","link":"https:\/\/blog.ywdevops.cn\/index.php\/2022\/09\/23\/go-26\/","title":{"rendered":"Go\u8bed\u8a00\u4e4b\u8fd0\u7b97\u7b26"},"content":{"rendered":"\n

Golang \u8fd0\u7b97\u7b26\u4e3b\u8981\u6709\u7b97\u672f\u8fd0\u7b97\u7b26\u3001\u8d4b\u503c\u8fd0\u7b97\u7b26\u3001\u6bd4\u8f83\u8fd0\u7b97\u7b26\/\u5173\u7cfb\u8fd0\u7b97\u7b26\u3001\u903b\u8f91\u8fd0\u7b97\u7b26\u3001\u4f4d\u8fd0\u7b97\u7b26\u548c\u6307\u9488\u8fd0\u7b97\u7b26<\/p>\n\n\n\n

\u4e00\u3001\u7b97\u672f\u8fd0\u7b97\u7b26<\/strong><\/p>\n\n\n\n

\u7b97\u672f\u8fd0\u7b97\u7b26\u662f\u5bf9 \u6570\u503c\u7c7b\u578b<\/a><\/strong> \u7684\u53d8\u91cf\u8fdb\u884c\u8fd0\u7b97\u7684\uff0c\u6bd4\u5982\uff1a\u52a0\u3001\u51cf\u3001\u4e58\u3001\u9664\u548c\u53d6\u6a21<\/p>\n\n\n\n

\u8fd0\u7b97\u7b26<\/td>\u8bf4\u660e<\/td>\u793a\u4f8b<\/td>\u7ed3\u679c<\/td><\/tr>
+<\/td>\u6b63\u53f7<\/td>+3<\/td>3<\/td><\/tr>
–<\/td>\u8d1f\u53f7<\/td>-1<\/td>-1<\/td><\/tr>
+<\/td>\u52a0\u6cd5\u8fd0\u7b97<\/td>2+5<\/td>7<\/td><\/tr>
–<\/td>\u51cf\u6cd5\u8fd0\u7b97<\/td>9-5<\/td>4<\/td><\/tr>
*<\/td>\u4e58\u6cd5\u8fd0\u7b97<\/td>8*3<\/td>24<\/td><\/tr>
\/<\/td>\u9664\u6cd5\u8fd0\u7b97<\/td>10\/3<\/td>3<\/td><\/tr>
%<\/td>\u53d6\u6a21\u8fd0\u7b97<\/td>10%3<\/td>1<\/td><\/tr>
++<\/td>\u81ea\u589e\u8fd0\u7b97<\/td>a = 5; a++<\/td>6<\/td><\/tr>
—<\/td>\u81ea\u51cf\u8fd0\u7b97(\u4e24\u4e2a-)<\/td>a = 8; a\u2013<\/td>7<\/td><\/tr>
+<\/td>\u5b57\u7b26\u4e32\u62fc\u63a5<\/td>“hello” + “world”<\/td>“helloworld”<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u6ce8\uff1a\u9664\u6cd5\u8fd0\u7b97 \/\uff0c\u5982\u679c\u662f\u6574\u6570\u4e4b\u95f4\u505a\u9664\u6cd5\u8fd0\u7b97\u65f6\uff0c\u53ea\u4fdd\u7559\u6574\u6570\u90e8\u5206\u800c\u820d\u5f03\u5c0f\u6570\u90e8\u5206\uff0cGolang \u4e2d\u7684\u81ea\u589e\u8fd0\u7b97\u548c\u81ea\u51cf\u8fd0\u7b97\u53ea\u80fd\u5f53\u505a\u4e00\u4e2a\u72ec\u7acb\u8bed\u53e5\u4f7f\u7528\uff0cGolang \u4e2d\u53ea\u652f\u6301\u540e\u81ea\u589e\u548c\u540e\u81ea\u51cf<\/p>\n\n\n\n

1\u3001\u4e0b\u9762\u4f8b\u5b50\u901a\u8fc7\u7b97\u6570\u8fd0\u7b97\u7b26\u8fdb\u884c\u8ba1\u7b97\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u4e8c\u3001\u8d4b\u503c\u8fd0\u7b97\u7b26<\/strong><\/p>\n\n\n\n

\u8d4b\u503c\u8fd0\u7b97\u7b26\u662f\u5bf9\u5df2\u5b58\u5728\u7684 \u53d8\u91cf<\/a><\/strong> \u8fdb\u884c\u91cd\u65b0\u8bbe\u7f6e\u65b0\u503c\u7684\u8fd0\u7b97\u7b26<\/p>\n\n\n\n

\u5341\u8fdb\u5236\u8fd0\u7b97\uff1a<\/p>\n\n\n\n

\u8fd0\u7b97\u7b26<\/td>\u8bf4\u660e<\/td>\u793a\u4f8b<\/td>\u7ed3\u679c<\/td><\/tr>
=<\/td>\u5c06\u4e00\u4e2a\u8868\u8fbe\u5f0f\u7684\u503c\u8d4b\u7ed9\u53e6\u4e00\u4e2a<\/td>a=a+b<\/td>a=a+b<\/td><\/tr>
+=<\/td>\u76f8\u52a0\u540e\u518d\u8d4b\u503c<\/td>a+=b<\/td>a=a+b<\/td><\/tr>
-=<\/td>\u76f8\u51cf\u540e\u518d\u8d4b\u503c<\/td>a-=b<\/td>a=a-b<\/td><\/tr>
*=<\/td>\u76f8\u4e58\u540e\u518d\u8d4b\u503c<\/td>a*=b<\/td>a=a*b<\/td><\/tr>
\/=<\/td>\u6c42\u4f59\u540e\u518d\u8d4b\u503c<\/td>a\/=b<\/td>a=a\/b<\/td><\/tr>
%=<\/td>\u76f8\u9664\u540e\u518d\u8d4b\u503c<\/td>a%=b<\/td>a=a%b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u4e8c\u8fdb\u5236\u8fd0\u7b97\u7b26\uff1a<\/p>\n\n\n\n

\u8fd0\u7b97\u7b26<\/td>\u8bf4\u660e<\/td>\u793a\u4f8b<\/td>\u7ed3\u679c<\/td><\/tr>
<<=<\/td>\u5de6\u79fb\u540e\u8d4b\u503c<\/td>a<<=b<\/td>a=a<<b<\/td><\/tr>
>>=<\/td>\u53f3\u79fb\u540e\u8d4b\u503c<\/td>a>>=b<\/td>a=a>>b<\/td><\/tr>
&=<\/td>\u6309\u4f4d\u4e0e\u540e\u8d4b\u503c<\/td>a&=b<\/td>a=a&b<\/td><\/tr>
^=<\/td>\u6309\u4f4d\u5f02\u6216\u540e\u8d4b\u503c<\/td>a^=b<\/td>a=a^b<\/td><\/tr>
|=<\/td>\u6309\u4f4d\u6216\u540e\u8d4b\u503c<\/td>a |= b<\/td>a = a | b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

1\u3001\u4e0b\u9762\u901a\u8fc7\u5341\u8fdb\u5236\u8fd0\u7b97\u5b9e\u73b0\u8d4b\u503c\u8fd0\u7b97\u7b26\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

2\u3001\u901a\u8fc7\u5de6\u79fb\u53f3\u79fb\u8d4b\u503c\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u4ece\u4e0a\u56fe\u770b\u51fa,\u5c06a\u5de6\u79fb\u4e24\u4f4d\u540e\u8d4b\u503c\u7ed9a\uff0c\u6b64\u65f6a\u7684\u503c\u53d8\u4e3a40,\u4e3a\u4ec0\u4e48\u662f40\u5462\uff1f\u56e0\u4e3aa\u5de6\u79fb1\u4f4d\u76f8\u5f53\u4e8ea*2\u76841\u6b21\u65b9,a\u5de6\u79fb2\u4f4d\u5c31\u662fa * 2\u76842\u6b21\u65b9\uff0c\u4e5f\u5c31\u662f10 * 2\u76842\u6b21\u65b9\uff0c10*4=40,\u540c\u7406\uff0cb\u5411\u53f3\u79fb1\u4f4d\u76f8\u5f53\u4e8eb \/ 2\u76841\u6b21\u65b9,\u53f3\u79fb2\u4f4d\u5c31\u662fb\/2\u76842\u6b21\u65b9\uff0c\u56e0\u6b64\u5b9e\u9645\u7ed3\u679c\u4e3ab \/ 2\u76843\u6b21\u65b9\uff0cb\u7684\u503c\u4e3a5,\u5c31\u662f5\/2\u76843\u6b21\u65b9=5\/8\u7ed3\u679c\u4e3a0<\/p>\n\n\n\n

\u6ce8\uff1a2\u7684-1\u6b21\u65b9\u7ed3\u679c\u4e3a1\/2\u30012\u7684-2\u6b21\u65b9\u7ed3\u679c\u4e3a1\/4\u30012\u7684-3\u6b21\u65b9\u7ed3\u679c\u4e3a1\/8\uff0c\u4ee5\u6b64\u7c7b\u63a8<\/p>\n\n\n\n

3\u3001\u901a\u8fc7\u6309\u4f4d\u4e0e\u3001\u5f02\u6216\u3001\u6216\u5b9e\u73b0\u8d4b\u503c\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

(1) a&=5\u7684\u503c\u4e3a\u4ec0\u4e48\u662f4\uff1f<\/p>\n\n\n\n

\u6309\u4f4d\u4e0e\u662f\u5c06\u5341\u8fdb\u5236\u6570\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u6570\u4e4b\u540e\u8fdb\u884c\u6309\u4f4d\u64cd\u4f5c\uff0c30\u7684\u5341\u8fdb\u5236\u6570\u662f11110,5\u7684\u5341\u8fdb\u5236\u6570\u4e3a00101\uff0c&\u7684\u8fd0\u7b97\u6cd5\u5219\u662f\uff1a\u4e24\u4e2a\u64cd\u4f5c\u6570\u7684\u4e8c\u8fdb\u5236\u8868\u793a\uff0c\u53ea\u6709\u5bf9\u5e94\u4f4d\u7f6e\u90fd\u662f1\uff0c\u7ed3\u679c\u624d\u662f1\uff0c\u5426\u5219\u4e3a0\uff0c\u56e0\u6b6411110\u548c00101\u8fdb\u884c&\u540e\u7684\u5185\u5bb9\u4e3a00100,\u7ed3\u679c\u4e3a4<\/p>\n\n\n\n

(2) b^=4 \u7684\u503c\u4e3a\u4ec0\u4e48\u662f24\uff1f<\/p>\n\n\n\n

\u6309\u4f4d\u5f02\u6216\u4e5f\u9700\u8981\u5c06\u5341\u8fdb\u5236\u8f6c\u4e3a\u4e8c\u8fdb\u5236\u540e\u8fdb\u884c\u64cd\u4f5c\uff0c\u8fd0\u7b97\u6cd5\u5219\u662f\uff1a\u5f53\u4e24\u4e2a\u64cd\u4f5c\u6570\u7684\u4e8c\u8fdb\u5236\u8868\u793a\u76f8\u540c(\u540c\u4e3a0\u6216\u8005\u540c\u4e3a1) \u65f6\uff0c\u7ed3\u679c\u4e3a0\uff0c\u5426\u5219\u4e3a1\uff0c28\u7684\u4e8c\u8fdb\u5236\u6570\u4e3a11100,4\u7684\u4e8c\u8fdb\u5236\u4e3a00100\uff0c\u6839\u636e\u8fd0\u7b97\u6cd5\u5219\uff0c\u8fdb\u884c\u6309\u4f4d\u5f02\u6216\u540e\u7684\u503c\u4e8c\u8fdb\u5236\u4e3a11000\uff0c\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u5c31\u662f24<\/p>\n\n\n\n

(3) c |=3 \u7684\u503c\u4e3a\u4ec0\u4e48\u662f15\uff1f<\/p>\n\n\n\n

\u6309\u4f4d\u6216\u4e5f\u9700\u8981\u5c06\u5341\u8fdb\u5236\u8f6c\u4e3a\u4e8c\u8fdb\u5236\u540e\u8fdb\u884c\u64cd\u4f5c\uff0c\u8fd0\u7b97\u6cd5\u5219\u662f\uff1a\u4e24\u4e2a\u64cd\u4f5c\u6570\u7684\u4e8c\u8fdb\u5236\u8868\u793a\uff0c\u53ea\u6709\u5bf9\u5e94\u4f4d\u7f6e\u90fd\u662f0\uff0c\u7ed3\u679c\u624d\u662f0\uff0c\u5426\u5219\u4f4d\u7f6e1\uff0c15\u7684\u4e8c\u8fdb\u5236\u4e3a1111,3\u7684\u4e8c\u8fdb\u5236\u4e3a0011\uff0c\u56e0\u6b64\u6309\u4f4d\u6216\u540e\u7684\u7ed3\u679c\u4e3a1111\uff0c\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u5c31\u662f15<\/p>\n\n\n\n

\u4e09\u3001\u6bd4\u8f83\u8fd0\u7b97\u7b26<\/strong><\/p>\n\n\n\n

\u6bd4\u8f83\u8fd0\u7b97\u7b26(\u5173\u7cfb\u8fd0\u7b97\u7b26)\u7684\u7ed3\u679c\u90fd\u662f bool<\/a><\/strong> \u578b\uff0c\u4e5f\u5c31\u662f\u8981\u4e48\u662f true\uff0c\u8981\u4e48\u662f false\u3002\u5173\u7cfb\u8868\u8fbe\u5f0f\u7ecf\u5e38\u7528\u5728 if<\/a><\/strong> \u7ed3\u6784\u7684\u6761\u4ef6\u4e2d\u6216 \u5faa\u73af\u7ed3\u6784<\/a><\/strong> \u7684\u6761\u4ef6\u4e2d<\/p>\n\n\n\n

\u8fd0\u7b97\u7b26<\/td>\u8bf4\u660e<\/td>\u793a\u4f8b<\/td>\u7ed3\u679c<\/td><\/tr>
==<\/td>\u76f8\u7b49<\/td>3 == 3<\/td>true<\/td><\/tr>
!=<\/td>\u4e0d\u7b49\u4e8e<\/td>2 != 2<\/td>false<\/td><\/tr>
<<\/td>\u5c0f\u4e8e<\/td>2 < 5<\/td>false<\/td><\/tr>
><\/td>\u5927\u4e8e<\/td>3 > 1<\/td>true<\/td><\/tr>
<=<\/td>\u5c0f\u4e8e\u7b49\u4e8e<\/td>3 <= 8<\/td>true<\/td><\/tr>
>=<\/td>\u5927\u4e8e\u7b49\u4e8e<\/td>5 >= 6<\/td>false<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

1\u3001\u4e0b\u9762\u4f8b\u5b50\u8868\u793a\u5229\u7528\u6bd4\u8f83\u8fd0\u7b97\u7b26\u8fdb\u884c\u8ba1\u7b97\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

\u5728golang\u4e2d\uff0c\u53ef\u4ee5\u76f4\u63a5\u5c06float64\u548cint\u8fdb\u884c\u6bd4\u8f83\uff0cgolang\u5185\u90e8\u4f1a\u81ea\u884c\u8f6c\u6362\u7c7b\u578b<\/p>\n\n\n\n

2\u3001\u4e0b\u9762\u4f8b\u5b50\u4ece\u952e\u76d8\u83b7\u53d6\u4e00\u4e2a\u6574\u6570\u6216\u8005\u6d6e\u70b9\u6570\uff0c\u5e76\u4e0e50\u8fdb\u884c\u6bd4\u8f83\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u8bf4\u660e\uff1a\u4ece\u952e\u76d8\u8f93\u5165\u540e\uff0c\u8bfb\u53d6\u7684\u5185\u5bb9\u5b9e\u9645\u662f\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u56e0\u6b64\u5728\u53bb\u9664\\n\u540e\uff0c\u8fd8\u9700\u8981\u5c06\u6b64\u5b57\u7b26\u4e32\u7c7b\u578b\u8f6c\u6362\u4e3afloat64\u7c7b\u578b\uff0c\u7136\u540e\u5728\u4e0e50\u8fdb\u884c\u6bd4\u8f83\uff0c\u8fd0\u884c\u7a0b\u5e8f\uff0c\u5206\u522b\u8f93\u5165\u4e09\u4e2a\u6570\uff0c\u7ed3\u679c\u5982\u56fe\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u6ce8\u610f\u770b\uff1a\u8f93\u516525.890\u540e\uff0c\u5b9e\u9645\u8f93\u51fa\u53ea\u670925.89\uff0c\u56e0\u4e3a\u5728golang\u4e2d\uff0c\u5982\u679c\u6d6e\u70b9\u6570\u6700\u540e\u4e00\u4e2a\u4e3a0\uff0c\u5e76\u4e14\u8be5\u4f4d\u4e4b\u540e\u6ca1\u6709\u975e\u96f6\u6570\u5b57\uff0c\u90a3\u4e48\u53ef\u4ee5\u88ab\u7701\u7565\u8fd9\u662f\u7531\u4e8e IEEE 754 \u6d6e\u70b9\u6570\u6807\u51c6\u7684\u820d\u5165\u89c4\u5219\u6240\u51b3\u5b9a\u7684<\/p>\n\n\n\n

3\u3001\u4e5f\u53ef\u4ee5\u4f7f\u7528==\u6765\u6bd4\u8f83\u5b57\u7b26\u4e32\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

\u56db\u3001\u903b\u8f91\u8fd0\u7b97\u7b26<\/strong><\/p>\n\n\n\n

\u903b\u8f91\u8fd0\u7b97\u7b26\u662f\u7528\u4e8e\u8fde\u63a5\u591a\u4e2a\u6761\u4ef6\uff08\u4e00\u822c\u6765\u8bb2\u5c31\u662f\u5173\u7cfb\u8868\u8fbe\u5f0f\uff09\uff0c\u6700\u7ec8\u7684\u7ed3\u679c\u4e5f\u662f\u4e00\u4e2a bool<\/a><\/strong> \u503c<\/p>\n\n\n\n

\u8fd0\u7b97\u7b26<\/td>\u8bf4\u660e<\/td>\u793a\u4f8b<\/td><\/tr>
&&<\/td>\u903b\u8f91\u4e0e<\/td>a && b<\/td><\/tr>
||<\/td>\u903b\u8f91\u6216<\/td>a || b<\/td><\/tr>
\uff01<\/td>\u903b\u8f91\u975e<\/td>!a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    \n
  • \u903b\u8f91\u4e0e\uff1a\u5982\u679c a \u548c b \u7684\u503c\u90fd\u4e3a\u771f\uff0c\u90a3\u4e48\u7ed3\u679c\u4e3a\u771f\uff0c\u5426\u5219\u7ed3\u679c\u4e3a\u5047\u3002\u5982\u679c a \u7684\u503c\u4e3a\u5047\uff0c\u90a3\u4e48\u4e0d\u4f1a\u8ba1\u7b97 b \u7684\u503c<\/li>\n\n\n\n
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    <\/p>\n","protected":false},"excerpt":{"rendered":"

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