\u200b \u53d8\u91cf\u6307\u7684\u662f\u503c\u53ef\u4ee5\u88ab\u6539\u7684\u91cf\uff0c\u5e38\u91cf\u6307\u7684\u5219\u662f\u503c\u4e0d\u53ef\u4ee5\u88ab\u6539\u53d8\u7684\u91cf\uff0c\u5728Go\u8bed\u8a00\u4e2d\uff0c\u5e38\u91cf\u7684\u503c\u5728\u7f16\u8bd1\u671f\u95f4\u5c31\u5df2\u7ecf\u786e\u5b9a\u597d\u4e86\uff0c\u4e14\u5728\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u4e0d\u53ef\u6539\u53d8\u3002<\/p>\n
\u200b \u5e38\u91cf\u7684\u58f0\u660e\u8bed\u53e5\u5982\u4e0b\uff0c\u5b9a\u4e49\u4e86\u5e38\u91cf\u7684\u540d\u5b57\uff0c\u548c\u53d8\u91cf\u7684\u58f0\u660e\u8bed\u6cd5\u7c7b\u4f3c<\/p>\n
const \u540d\u5b57 \u7c7b\u578b = \u521d\u59cb\u5316\u8868\u8fbe\u5f0f\n\n\/\/ \u4f8b\u5982\nconst x int = 10\nx = 111 \/\/ \u62a5\u9519\uff1acannot assign to x<\/code><\/pre>\n\u200b \u867d\u7136\u5e38\u91cf\u548c\u53d8\u91cf\u5f88\u76f8\u4f3c\uff0c\u4f46\u6bd5\u7adf\u662f\u4e24\u79cd\u4e1c\u897f\uff0c\u6240\u4ee5\u4e0d\u8981\u786c\u628a\u53d8\u91cf\u7684\u4e1c\u897f\u5f80\u5e38\u91cf\u4e0a\u5957\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f<\/p>\n
\n- \n
1\u3001\u521d\u59cb\u5316\u8868\u8fbe\u5f0f\u53ef\u4ee5\u662f\u5b57\u9762\u91cfor\u4efb\u610f\u8868\u8fbe\u5f0f <\/p>\n<\/li>\n
- \n
2\u3001\u7c7b\u578b\u662f\u53ef\u6709\u53ef\u65e0\u7684<\/p>\n<\/li>\n
- \n
3\u3001\u5e38\u91cf\u58f0\u660e\u5b8c\u4e4b\u540e\u4e0d\u7528\u4e5f\u4e0d\u4f1a\u62a5\u9519<\/p>\n<\/li>\n
- \n
4\u3001\u6211\u4eec\u53ef\u4ee5\u53d6\u53d8\u91cf\u7684\u5730\u5740\uff0c\u4f46\u662f\u6211\u4eec\u65e0\u6cd5\u53d6\u5e38\u91cf\u7684\u5730\u5740\uff0c\u539f\u56e0\u5982\u4e0b<\/p>\n
\u53d6\u5730\u5740\u65e0\u975e\u4e24\u79cd\u7528\u9014\uff1a\n\u200b 1\u3001\u6839\u636e\u5730\u5740\u4fee\u6539\u503c\n\u200b 2\u3001\u5f15\u7528\u4f20\u9012\n\u56e0\u4e3a\u5e38\u91cf\u662f\u4e0d\u53ef\u4ee5\u88ab\u6539\u53d8\u7684\uff0c\u6240\u4ee5\u5728\u5e95\u5c42\u8bbe\u8ba1\u4e0a\u4e0d\u5141\u8bb8\u6211\u4eec\u5bf9\u5e38\u91cf\u53d6\u5730\u5740\uff0c\u56e0\u4e3a\u5982\u679c\u4f60\u80fd\u53d6\u5230\u5e38\u91cf\u7684\u5730\u5740\uff0c\u5c82\u4e0d\u662f\u987a\u7740\u5730\u5740\u5c31\u7ed9\u628a\u5b83\u5185\u5b58\u7a7a\u95f4\u4e2d\u7684\u503c\u53ef\u4ee5\u6539\u6389\u4e86\uff0c\u6240\u4ee5\u8bbe\u8ba1\u8005\u5e72\u8106\u7ed9\u6211\u4eec\u5c4f\u853d\u6389\u4e86\u5bf9\u5e38\u91cf\u7684\u53d6\u5730\u5740\u64cd\u4f5c\uff0c\u56e0\u4e3a\u6ca1\u5565\u610f\u4e49\uff0c\u6240\u4ee5\u8bf4\u5e38\u91cf\u503c\u7684\u4f20\u9012\u4e5f\u90fd\u662f\u503c\u4f20\u9012\uff0c\u800c\u975e\u5f15\u7528\u4f20\u9012\u3002<\/code><\/pre>\n<\/li>\n<\/ul>\n\u4e8c \u5b57\u9762\u91cf<\/h3>\n
\u200b \u5b57\u9762\u91cf\uff08literal\uff09\u4e5f\u6210\u4e3a\u5b57\u9762\u503cor\u5b57\u9762\u5e38\u91cf\uff0c\u5c31\u662f\u201d\u5b57\u9762\u201c\u610f\u601d\u4e0a\u7684\u91cf\u3001\u662f\u6307\u7a0b\u5e8f\u4e2d\u201d\u786c\u7f16\u7801\u201c\u7684\u91cf\uff0c\u901a\u4fd7\u5730\u8bb2\uff0c\u5b57\u9762\u91cf\u5c31\u662f\u4ee5\u4eba\u7c7b\u53ef\u8bfb\u5f62\u5f0f\u8868\u793a\u7684\u56fa\u5b9a\u503c\uff0c\u6709\u4ee5\u4e0b\u51e0\u79cd<\/p>\n
111\n3.1\n3.2+12i\ntrue\n"egon" <\/code><\/pre>\n\u200b \u6ce8\u610f\u6ce8\u610f\u6ce8\u610f\uff01\uff01\uff01<\/p>\n
\u200b \u201d\u5b57\u9762\u201c\u4e0e\u201d\u786c\u7f16\u7801\u201c\u90fd\u662f\u5728\u63d0\u9192\u4f60\uff0c\u5b83\u53ea\u662f\u5b83\u5b57\u9762\u7684\u6837\u5b50\uff0c\u4e0d\u8981\u81ea\u5df1\u610f\u6deb\u5b83\u7684\u7c7b\u578b\uff0c\u4f8b\u5982111\u8fd9\u4e2a\u5b57\u9762\u91cf\u5c31\u662f\u4e00\u7cfb\u5217\u963f\u62c9\u4f2f\u6570\u5b57\uff0c\u4f60\u53ef\u80fd\u4f1a\u8bf4\u5b83\u96be\u9053\u4e0d\u662fint\u7c7b\u578b\u5417\uff0c\u5f53\u7136\u4e0d\u662f\u55bd\uff0cint\u7c7b\u578b\u662f\u7f16\u7a0b\u8bed\u8a00\u4e2d\u624d\u6709\u7684\u6982\u5ff5\uff0c\u800c\u963f\u62c9\u4f2f\u6570\u5b57\u7b49\u4eba\u7c7b\u81ea\u7136\u8bed\u8a00\u7684\u7b26\u53f7\u65e9\u5728\u7f16\u7a0b\u8bed\u8a00\u8bde\u751f\u4e4b\u524d\u5c31\u5df2\u7ecf\u6709\u4e86\uff0c\u5373\u4fbf\u6ca1\u6709\u7f16\u7a0b\u8bed\u8a00111\u30013.1\uff0c\u201chello\u201d\u8fd9\u4e9b\u503c\u4e5f\u90fd\u662f\u5b58\u5728\u7684\uff0c\u6bd4\u5982\uff0c\u4f60\u968f\u4fbf\u627e\u4e2a\u4eba\u8ba9\u4ed6\u770b\u770b\u4e00\u773c111\u4ed6\u90fd\u8ba4\u8bc6\uff0c\u4f46\u4f60\u8ddf\u4ed6\u8bb2int\u7c7b\u578b\uff0c\u9664\u975e\u4ed6\u662f\u7a0b\u5e8f\u5458\u4ed6\u624d\u80fd\u542c\u61c2\u4f60\u5728\u8bb2\u4ec0\u4e48\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u662f\u7f16\u7a0b\u8bed\u8a00\u5c06\u5b57\u9762\u91cf111\u4e0e\u6570\u636e\u7c7b\u578bint\u8fd9\u4e24\u79cd\u6982\u5ff5\u8054\u7cfb\u5230\u4e86\u4e00\u8d77\u3002<\/p>\n
\u200b \u7efc\u4e0a\u6240\u8ff0\uff0c\u5b57\u9762\u91cf\u4e0e\u6570\u636e\u7c7b\u578b\u662f\u4e24\u4ef6\u4e8b\u60c5\uff0c\u800c\u5728\u6709\u7684\u8bed\u8a00\u4e2d\uff0c\u5374\u4f1a\u76f4\u63a5\u5c06\u5b57\u9762\u91cf\u4e0e\u7279\u5b9a\u7684\u7c7b\u578b\u6df7\u6742\u5728\u4e00\u8d77\uff0c\u8fd9\u4e48\u505a\u662f\u4e0d\u597d\u7684<\/p>\n
\u6bd4\u5982111\u8fd9\u4e00\u5b57\u9762\u91cf\u5728C\u8bed\u8a00\u4e2d\u4f1a\u8ba4\u4e3a\u662f\u4e00\u4e2aint\u7c7b\u578b\uff0c\u4e00\u4e2along\u7c7b\u578b\u7684\u5b57\u9762\u91cf\u9700\u8981\u5199\u6210111l\uff0c\u8fd9\u5176\u5b9e\u662f\u4e0e\u201d\u5b57\u9762\u201c\u4e8c\u5b57\u7684\u6838\u5fc3\u4e3b\u65e8\u76f8\u6096\u7684\uff0c\u201d\u5b57\u9762\u201c\u53cd\u6620\u51fa\u7684\u5c31\u5e94\u8be5\u53ea\u662f\u5b83\u5b57\u9762\u7684\u4e1c\u897f\uff0c\u4e0d\u5e94\u8be5\u63ba\u6742\u7c7b\u578b\u7684\u6982\u5ff5\uff0c\u56e0\u4e3a\u7c7b\u578b\u8fd9\u4e2a\u4e1c\u897f\u662f\u53e6\u5916\u4e00\u4ef6\u5355\u72ec\u7684\u4e8b\u60c5\uff0c\u6bd4\u5982111l\uff0c\u8fd9\u4e2a\u540e\u7f00l\u5c31\u63ba\u6742\u8fdb\u4e86\u7c7b\u578b\u7684\u6982\u5ff5\uff0c\u90a3\u4e48\u6b64\u65f6\u5b83\u7684\u5b57\u9762\u4fbf\u4e0d\u90a3\u4e48\u5b57\u9762\uff0c\u6ca1\u6709\u90a3\u4e48\u7684\u5355\u7eaf\u3002<\/code><\/pre>\n\u200b \u6240\u4ee5\uff0c\u6211\u4eec\u5e94\u8be5\u5c06\u5b57\u9762\u503c\u4e0e\u7c7b\u578b\u5f53\u6210\u4e24\u79cd\u6982\u5ff5\u53bb\u770b\uff0c\u800c\u7ad9\u5728\u5de8\u4eba\u80a9\u8180\u4e0a\u7684go\u8bed\u8a00\uff0c\u81ea\u7136\u662f\u4f5c\u51fa\u4e86\u5bf9\u5e94\u7684\u8c03\u6574\uff0c\u5b57\u9762\u91cf\u53ea\u662f\u5b83\u5b57\u9762\u7684\u6837\u5b50\uff0c\u81f3\u4e8e\u6570\u636e\u7c7b\u578b\uff0c\u90a3\u662f\u53e6\u5916\u4e00\u4ef6\u4e8b\u3002<\/p>\n
\u200b \u4e00\u53e5\u8bdd\uff1aGo\u8bed\u8a00\u7684\u5b57\u9762\u5e38\u91cf\u66f4\u63a5\u8fd1\u6211\u4eec\u81ea\u7136\u8bed\u8a00\u4e2d\u7684\u5e38\u91cf\u6982\u5ff5\uff0c\u5b83\u4eec\u672c\u8eab\u662f\u65e0\u7c7b\u578b\u7684\uff0c\u5728Go\u8bed\u8a00\u4e2d\uff0c\u53ea\u6709\u4e0b\u8ff0\u4e94\u79cd\u5b57\u9762\u91cf\u53ef\u4ee5\u8d4b\u503c\u7ed9\u5e38\u91cf<\/p>\n
111\u8fd9\u79cd\u5b57\u9762\u91cf\u53ef\u4ee5\u88ab\u79f0\u4e4b\u4e3a\u65e0\u7c7b\u578b\u7684\u6574\u6570\n3.1\u8fd9\u79cd\u5b57\u9762\u91cf\u88ab\u79f0\u4e4b\u4e3a\u65e0\u7c7b\u578b\u7684\u6d6e\u70b9\u6570\n3.2+12i\u8fd9\u79cd\u5b57\u9762\u91cf\u88ab\u79f0\u4e4b\u4e3a\u65e0\u7c7b\u578b\u7684\u590d\u6570\ntrue\u8fd9\u79cd\u5b57\u9762\u91cf\u88ab\u79f0\u4e4b\u4e3a\u65e0\u7c7b\u578b\u7684\u5e03\u5c14\u578b\n\u201degon\u201c\u8fd9\u79cd\u5b57\u9762\u91cf\u88ab\u79f0\u4e4b\u4e3a\u65e0\u7c7b\u578b\u7684\u5b57\u7b26\n\n\/\/!!! \u6ce8\u610f\u6ce8\u610f\u6ce8\u610f\uff1a\u6570\u5b57\u5e38\u91cf\u4e0d\u4f1a\u5206\u914d\u5b58\u50a8\u7a7a\u95f4\uff0c\u65e0\u987b\u50cf\u53d8\u91cf\u90a3\u6837\u901a\u8fc7\u5185\u5b58\u5bfb\u5740\u6765\u53d6\u503c\uff0c\u5373\u65e0\u6cd5\u83b7\u53d6\u5730\u5740<\/code><\/pre>\n\u200b \u5b57\u9762\u91cf\u53ef\u4ee5\u7528\u4e8e\u53d8\u91cf\u4e2d\uff0c\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5e38\u91cf\u4e2d\uff0c\u662f\u4e0d\u4e00\u6837\u7684<\/p>\n
\n- \n
1\u3001\u53d8\u91cf\u662f\u5fc5\u987b\u6709\u7c7b\u578b\u7684<\/p>\n
=====> \u53d8\u91cf\u662f\u5fc5\u987b\u6709\u7c7b\u578b\u7684\uff0c\u5b57\u9762\u91cf\u5fc5\u987b\u4e0e\u53d8\u91cf\u7684\u7c7b\u578b\u4fdd\u6301\u4e00\u81f4 <=====\n(1) \u5982\u679c\u6211\u4eec\u6ca1\u6709\u4e3a\u53d8\u91cf\u6307\u5b9a\u7c7b\u578b\uff0c\u90a3\u4e48\u5b57\u9762\u5e38\u91cf\u4f1a\u88ab\u9690\u5f0f\u5730\u8f6c\u6362\u6210\u81ea\u5df1\u9ed8\u8ba4\u7684\u7c7b\u578b\n\n\u5b57\u9762\u91cf \u9ed8\u8ba4\u7c7b\u578b\n\u5b57\u9762\u91cf\u4e3a\u6574\u6570 ---------> int\u7c7b\u578b\n\u5b57\u9762\u91cf\u4e3a\u6d6e\u70b9\u6570 ---------> float64\u7c7b\u578b\n\u5b57\u9762\u91cf\u4e3a\u590d\u6570 ---------> complex128\u7c7b\u578b\n\u5b57\u9762\u91cf\u4e3atrue\u6216false ---------> bool\u7c7b\u578b\n\u5b57\u9762\u91cf\u4e3a\"egon\" ---------> string\u7c7b\u578b\n\n\u4f8b\u5982\nvar x = 1+2i \nfmt.Printf(\"%T\",x) \/\/ complex128\n\n(2) \u5982\u679c\u6211\u4eec\u5df2\u7ecf\u4e3a\u53d8\u91cf\u6307\u5b9a\u4e86\u7c7b\u578b\uff0c\u90a3\u4e48\u5b57\u9762\u5e38\u91cf\u4f1a\u88ab\u663e\u5f0f\u5730\u8f6c\u6362\u6210\u53d8\u91cf\u7684\u7c7b\u578b\uff0c\u524d\u63d0\u662f\u8f6c\u6362\u5408\u6cd5\uff0c\u5373\u5b57\u9762\u91cf\u5fc5\u987b\u5728\u76f8\u5e94\u7c7b\u578b\u7684\u503c\u57df\u8303\u56f4\u5185\u3002\n\n\/\/ \u4f8b\u59823,\u5b83\u5728int\u3001 uint\u3001 int32\u3001int64\u3001 float32\u3001 float64\u3001 complex64\u3001 complex128\u7b49\u7c7b\u578b\u7684\u503c\u57df\u8303\u56f4\u5185\nvar x int = 3 \/\/ \u53d8\u91cf\u7684\u7c7b\u578b\u660e\u786e\u4e3aint\uff0c\u6240\u4ee5\u5b57\u9762\u91cf3\u88ab\u9690\u5f0f\u8f6c\u6362\u6210\u4e86int\u7c7b\u578b\n\n\/\/ \u4f8b\u59823.1\uff0c\u4ed6\u5728float32\u3001float64\u3001complex64\u7684\u503c\u57df\u8303\u56f4\u5185\nvar a int = 3.1 \/\/ \u62a5\u9519\uff0c\u8f6c\u6362\u4e0d\u5408\u6cd5\nvar b float32 = 3.1 \/\/ \u65e0\u7c7b\u578b\u6d6e\u70b9\u65703.1\u88ab\u8f6c\u6362\u6210\u4e86float32\u7c7b\u578b\nvar c float64 = 3.1 \/\/ \u65e0\u7c7b\u578b\u6d6e\u70b9\u65703.1\u88ab\u8f6c\u6362\u6210\u4e86float64\u7c7b\u578b\nvar e complex64= 3.1 \/\/ \u65e0\u7c7b\u578b\u6d6e\u70b9\u65703.1\u88ab\u8f6c\u6362\u6210\u4e86complex64\u7c7b\u578b\n\nvar x float32 = math.Pi \/\/ math.Pi\u4e5f\u662f\u65e0\u7c7b\u578b\u7684\u6d6e\u70b9\u6570\nvar y float64 = math.Pi\nvar z complex128 = math.Pi\n\nvar f float64 = 3 + 0i \/\/ untyped complex -> float64\nf = 2 \/\/ untyped integer -> float64\nf = 1e123 \/\/ untyped floating-point -> float64\nf = 'a' \/\/ untyped rune -> float64\n\u4e0a\u8ff0\u8bed\u53e5\u7684\u8f6c\u6362\u90fd\u662f\u9690\u5f0f\u7684\uff0c\u76f8\u5f53\u4e8e\u4e0b\u8ff0\u7684\u663e\u5f0f\u8f6c\u6362\nvar f float64 = float64(3 + 0i)\nf = float64(2)\nf = float64(1e123)\nf = float64('a')\n\n\u6240\u4ee5\uff0c\u6211\u4eec\u53ef\u4ee5\u663e\u5f0f\u5730\u5148\u5c06\u5b57\u9762\u91cf\u8f6c\u6362\u6210\u4e00\u79cd\u7c7b\u578b\nvar x = int8(3) \/\/ \u7b49\u53f7\u5de6\u4fa7\u65e0\u9700\u6307\u5b9a\u7c7b\u578b\u4e86\uff0c\u5982\u679c\u975e\u8981\u6307\u5b9a\uff0c\u90a3\u4e5f\u5fc5\u987b\u662fint8\nvar y = int64(3)\n\n\u7efc\u4e0a\uff0c\u5982\u679c\u8981\u7ed9\u4e00\u4e2a\u53d8\u91cf\u660e\u786e\u7684\u7c7b\u578b\uff0c\u6211\u4eec\u53ef\u4ee5\u6709\u4e24\u79cd\u65b9\u5f0f\nvar i = int8(0) \/\/ \u65b9\u5f0f1\uff1a\u663e\u5f0f\u5730\u5c06\u65e0\u7c7b\u578b\u7684\u5e38\u91cf\u8f6c\u5316\u4e3a\u6240\u9700\u7684\u7c7b\u578b\nvar i int8 = 0 \/\/ \u65b9\u5f0f2\uff1a\u7ed9\u58f0\u660e\u7684\u53d8\u91cf\u6307\u5b9a\u660e\u786e\u7684\u7c7b\u578b<\/code><\/pre>\n<\/li>\n- \n
2\u3001\u5e38\u91cf\u53ef\u4ee5\u6709\u7c7b\u578b\u3001\u4e5f\u53ef\u4ee5\u6ca1\u6709\u7c7b\u578b\uff08\u4e5f\u53ea\u6709\u5e38\u91cf\u53ef\u4ee5\u6ca1\u6709\u7c7b\u578b\uff09<\/p>\n
1\u3001\u5b57\u9762\u91cf\u7528\u4e8e\u5e38\u91cf\u4e2d\uff0c\u5982\u679c\u6ca1\u6709\u58f0\u660e\u7c7b\u578b\uff0c\u90a3\u8be5\u5e38\u91cf\u5c31\u662f\u65e0\u7c7b\u578b\u7684\uff0cgo\u8bed\u8a00\u4e2d\u53ea\u6709\u4e0b\u8ff05\u79cd\u65e0\u7c7b\u578b\u5e38\u91cf\nconst a = 111 \/\/ \u65e0\u7c7b\u578b\u6574\u6570\u5e38\u91cf\nconst b = 3.1 \/\/ \u65e0\u7c7b\u578b\u6d6e\u70b9\u6570\u5e38\u91cf\nconst c = 3.2+12i \/\/ \u65e0\u7c7b\u578b\u590d\u6570\u5e38\u91cf\nconst d = true \/\/ \u65e0\u7c7b\u578b\u5e03\u5c14\u5e38\u91cf\nconst e = \"egon\" \/\/ \u65e0\u7c7b\u578b\u5b57\u7b26\u5e38\u91cf\n\n\u7f16\u8bd1\u5668\u4e3a\u6ca1\u6709\u660e\u786e\u7c7b\u578b\u7684\u6570\u5b57\u5e38\u91cf\uff08\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u590d\u6570\uff09\u63d0\u4f9b\u6bd4\u57fa\u7840\u7c7b\u578b\u66f4\u9ad8\u7cbe\u5ea6\u7684\u7b97\u672f\u8fd0\u7b97\uff1b\u4f60\u53ef\u4ee5\u8ba4\u4e3a\u81f3\u5c11\u6709256bit\u7684\u8fd0\u7b97\u7cbe\u5ea6\u3002\u5982\u4e0b\u6240\u793a\uff0cZiB\u548cYiB\u7684\u503c\u5df2\u7ecf\u8d85\u51fa\u4efb\u4f55Go\u8bed\u8a00\u4e2d\u6574\u6570\u7c7b\u578b\u80fd\u8868\u8fbe\u7684\u8303\u56f4\uff0c\u4f46\u662f\u5b83\u4eec\u4f9d\u7136\u662f\u5408\u6cd5\u7684\u5e38\u91cf\nconst YiB = 1208925819614629174706176\nconst ZiB = 1180591620717411303424\n\u800c\u4e14\u53ef\u4ee5\u50cf\u4e0b\u9762\u5e38\u91cf\u8868\u8fbe\u5f0f\u4f9d\u7136\u6709\u6548\nfmt.Println(YiB\/ZiB) \/\/ YiB\/ZiB\u662f\u5728\u7f16\u8bd1\u671f\u8ba1\u7b97\u51fa\u6765\u7684\uff0c\u5e76\u4e14\u7ed3\u679c\u5e38\u91cf\u662f1024\uff0c\u662fGo\u8bed\u8a00int\u53d8\u91cf\u80fd\u6709\u6548\u8868\u793a\u7684\uff09\uff1a\n\n2\u3001\u4e5f\u53ef\u4ee5\u9650\u5b9a\u5e38\u91cf\u7684\u7c7b\u578b\uff0c\u4f8b\u5982\nconst f int = 123 \/\/ int\u578b\u5e38\u91cf\nconst g float32 = 0.0 \/\/ float32\u578b\u5e38\u91cf\n\n3\u3001\u800c\u4e14\u901a\u8fc7\u5ef6\u8fdf\u660e\u786e\u5e38\u91cf\u7684\u5177\u4f53\u7c7b\u578b\uff0c\u65e0\u7c7b\u578b\u7684\u5e38\u91cf\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u4f9b\u66f4\u9ad8\u7684\u8fd0\u7b97\u7cbe\u5ea6\uff0c\u800c\u4e14\u53ef\u4ee5\u76f4\u63a5\u7528\u4e8e\u66f4\u591a\u7684\u8868\u8fbe\u5f0f\u800c\u4e0d\u9700\u8981\u663e\u5f0f\u7684\u7c7b\u578b\u8f6c\u6362\uff0c\u6bd4\u5982\u524d\u9762\u6211\u4eec\u63d0\u53ca\u5b57\u9762\u91cf\u5728\u53d8\u91cf\u4e2d\u7684\u5e94\u7528<\/code><\/pre>\n<\/li>\n- \n
3\u3001\u65e0\u8bba\u662f\u9690\u5f0f\u6216\u663e\u5f0f\u8f6c\u6362\uff0c\u5c06\u4e00\u79cd\u7c7b\u578b\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u7c7b\u578b\u90fd\u8981\u6c42\u76ee\u6807\u53ef\u4ee5\u8868\u793a\u539f\u59cb\u503c\u3002\u5bf9\u4e8e\u6d6e\u70b9\u6570\u548c\u590d\u6570\uff0c\u53ef\u80fd\u4f1a\u6709\u820d\u5165\u5904\u7406\uff1a<\/p>\n
const (\n deadbeef = 0xdeadbeef \/\/ untyped int with value 3735928559\n a = uint32(deadbeef) \/\/ uint32 with value 3735928559\n b = float32(deadbeef) \/\/ float32 with value 3735928576 (rounded up)\n c = float64(deadbeef) \/\/ float64 with value 3735928559 (exact)\n \/\/d = int32(deadbeef) \/\/ compile error: constant overflows int32\n \/\/e = float64(1e309) \/\/ compile error: constant overflows float64\n \/\/f = uint(-1) \/\/ compile error: constant underflows uint\n)<\/code><\/pre>\n<\/li>\n<\/ul>\n\u4e09 \u8868\u8fbe\u5f0f<\/h3>\n
\u5e38\u91cf\u5b9a\u4e49\u7684\u53f3\u503c\u4e5f\u53ef\u4ee5\u662f\u4e00\u4e2a\u5728\u7f16\u8bd1\u671f\u8fd0\u7b97\u7684\u5e38\u91cf\u8868\u8fbe\u5f0f\uff0c\u6bd4\u5982
\nconst mask = 1 << 3
\n\u7531\u4e8e\u5e38\u91cf\u7684\u8d4b\u503c\u662f\u4e00\u4e2a\u7f16\u8bd1\u671f\u884c\u4e3a\uff0c\u6240\u4ee5\u53f3\u503c\u4e0d\u80fd\u51fa\u73b0\u4efb\u4f55\u9700\u8981\u8fd0\u884c\u671f\u624d\u80fd\u5f97\u51fa\u7ed3\u679c\u7684\u8868\u8fbe
\n\u5f0f\uff0c\u6bd4\u5982\u8bd5\u56fe\u4ee5\u5982\u4e0b\u65b9\u5f0f\u5b9a\u4e49\u5e38\u91cf\u5c31\u4f1a\u5bfc\u81f4\u7f16\u8bd1\u9519\u8bef\uff1a
\nconst Home = os.GetEnv(\u201cHOME\u201d)
\n\u539f\u56e0\u5f88\u7b80\u5355\uff0c os.GetEnv()\u53ea\u6709\u5728\u8fd0\u884c\u671f\u624d\u80fd\u77e5\u9053\u8fd4\u56de\u7ed3\u679c\uff0c\u5728\u7f16\u8bd1\u671f\u5e76\u4e0d\u80fd\u786e\u5b9a\uff0c\u6240\u4ee5\u65e0\u6cd5\u4f5c\u4e3a\u5e38\u91cf\u5b9a\u4e49\u7684\u53f3\u503c\u3002<\/p>\n
\u56db \u58f0\u660e\u4e00\u7ec4\u5e38\u91cf<\/h3>\n
\u548c\u53d8\u91cf\u58f0\u660e\u4e00\u6837\uff0c\u53ef\u4ee5\u6279\u91cf\u58f0\u660e\u591a\u4e2a\u5e38\u91cf\uff1b\u8fd9\u6bd4\u8f83\u9002\u5408\u58f0\u660e\u4e00\u7ec4\u76f8\u5173\u7684\u5e38\u91cf\uff1a<\/p>\n
const (\n e = 2.71828182845904523536028747135266249775724709369995957496696763\n pi = 3.14159265358979323846264338327950288419716939937510582097494459\n)<\/code><\/pre>\n\u5982\u679c\u662f\u6279\u91cf\u58f0\u660e\u7684\u5e38\u91cf\uff0c\u9664\u4e86\u7b2c\u4e00\u4e2a\u5916\u5176\u5b83\u7684\u5e38\u91cf\u53f3\u8fb9\u7684\u521d\u59cb\u5316\u8868\u8fbe\u5f0f\u90fd\u53ef\u4ee5\u7701\u7565\uff0c\u5982\u679c\u7701\u7565\u521d\u59cb\u5316\u8868\u8fbe\u5f0f\u5219\u8868\u793a\u4f7f\u7528\u524d\u9762\u5e38\u91cf\u7684\u521d\u59cb\u5316\u8868\u8fbe\u5f0f\u5199\u6cd5\uff0c\u5bf9\u5e94\u7684\u5e38\u91cf\u7c7b\u578b\u4e5f\u4e00\u6837\u7684\u3002\u4f8b\u5982\uff1a<\/p>\n
const (\n a = 1\n b \/\/ \u7528\u7684\u662f\u524d\u4e00\u5e38\u91cf\u7684\u521d\u59cb\u8868\u8fbe\u5f0f\uff0c\u5373b = 1\n c = 2\n d \/\/ \u7528\u7684\u662f\u524d\u4e00\u5e38\u91cf\u7684\u521d\u59cb\u8868\u8fbe\u5f0f\uff0c\u5373d = 2\n)\n\nfmt.Println(a, b, c, d) \/\/ "1 1 2 2"<\/code><\/pre>\n\u5982\u679c\u53ea\u662f\u7b80\u5355\u5730\u590d\u5236\u53f3\u8fb9\u7684\u5e38\u91cf\u8868\u8fbe\u5f0f\uff0c\u5176\u5b9e\u5e76\u6ca1\u6709\u592a\u5b9e\u7528\u7684\u4ef7\u503c\u3002\u4f46\u662f\u5b83\u53ef\u4ee5\u5e26\u6765\u5176\u5b83\u7684\u7279\u6027\uff0c\u90a3\u5c31\u662fiota\u5e38\u91cf\u751f\u6210\u5668\u8bed\u6cd5\u3002<\/p>\n
\u4e94 \u9884\u5b9a\u4e49\u5e38\u91cf<\/h3>\n
Go\u8bed\u8a00\u9884\u5b9a\u4e49\u4e86\u8fd9\u4e9b\u5e38\u91cf\uff1a true\u3001 false\u548ciota\u3002
\niota\u6bd4\u8f83\u7279\u6b8a\uff0c\u53ef\u4ee5\u88ab\u8ba4\u4e3a\u662f\u4e00\u4e2a\u53ef\u88ab\u7f16\u8bd1\u5668\u4fee\u6539\u7684\u5e38\u91cf\uff0c\u5728\u4e14\u4ec5\u5728\u540c\u4e00\u4e2aconst\u58f0\u660e\u8bed\u53e5\u4e2d\uff0c\u5728\u7b2c\u4e00\u4e2a\u58f0\u660e\u7684\u5e38\u91cf\u6240\u5728\u7684\u884c\uff0ciota\u5c06\u4f1a\u88ab\u7f6e\u4e3a0\uff0c\u7136\u540e\u5728\u6bcf\u4e00\u4e2a\u6709\u5e38\u91cf\u58f0\u660e\u7684\u884c\u52a0\u4e00<\/p>\n
\u8fde\u7eed\u4e24\u4e2aconst\u5173\u952e\u5b57\u58f0\u660e\u7684iota\u90fd\u4e3a0<\/p>\n
const x = iota \/\/ \u51fa\u73b0\u4e86\u4e00\u4e2aconst\u5173\u952e\u5b57\uff0ciota\u91cd\u7f6e\u4e3a0\nconst y = iota \/\/ \u53c8\u51fa\u73b0\u4e86\u4e00\u4e2aconst\u5173\u952e\u5b57\uff0ciota\u8fd8\u662f\u91cd\u7f6e\u4e3a0\n\nfmt.Println(x,y) \/\/ 0 0<\/code><\/pre>\n\u5982\u679c\u662f\u4e00const\u5173\u952e\u5b57\uff0c\u58f0\u660e\u4e86\u4e00\u7ec4\u5e38\u91cf\uff0ciota\u4f1a\u81ea\u7b2c\u4e00\u4e2aiota\u5f00\u59cb\u4f9d\u6b21\u7d2f\u52a0\uff0c\u6ca1\u65b0\u589e\u5219\u4e00\u4e2a\u53d8\u91cf\u7d2f\u52a0\u4e00\u6b21<\/p>\n
const (\n a = 111 \/\/ \u7b2c\u4e00\u4e2a\u58f0\u660e\u7684\u5e38\u91cf\u6240\u5728\u7684\u884c\uff0c\u6b64\u5904\u867d\u7136\u6ca1\u6709iota\uff0c\u4f46iota\u7684\u503c\u88ab\u7f6e\u4e3a0\n b \/\/ b\u7684\u8868\u8fbe\u5f0f\u540c\u4e0a\uff0c\u6240\u4ee5\u4e3a111\uff0c\u6b64\u5904\u867d\u7136\u6ca1\u6709iota\uff0c\u4f46\u56e0\u4e3a\u662f\u65b0\u589e\u4e00\u4e2a\u5e38\u91cf\u58f0\u660e\uff0c\u6240\u4ee5iota\u7684\u503c\u52a01\n c \/\/ c\u7684\u8868\u8fbe\u5f0f\u540c\u4e0a\uff0c\u6240\u4ee5\u4e3a111\uff0c\u6b64\u5904\u867d\u7136\u6ca1\u6709iota\uff0c\u4f46\u56e0\u4e3a\u662f\u65b0\u589e\u4e00\u4e2a\u5e38\u91cf\u58f0\u660e\uff0c\u6240\u4ee5iota\u7684\u503c\u52a01\n d = iota \/\/ \u6b64\u5904\u7684iota\u57fa\u4e8e\u524d\u9762\u7684\u57fa\u7840\u52a01\uff0c\u6240\u4ee5d\u4e3a3\n e = 333\n f \/\/ \u540c\u4e0a\u4e3a333\n g \/\/ \u540c\u4e0a\u4e3a333\n)\nfmt.Println(a,b,c,d,e,f,g) \/\/ 111 111 111 3 333 333 333\n\nconst (\nu = iota * 42 \/\/ u == 0\nv float64 = iota * 42 \/\/ v == 42.0\nw = iota * 42 \/\/ w == 84\n)\n\nconst ( \nc0 = iota \/\/ c0 == 0\nc1 \/\/ c1 == 1\nc2 \/\/ c2 == 2\n)\n\nconst (\na = 1 <<iota \/\/ 1 << iota \u7b2c\u4e00\u4e2a\u5e38\u91cf\u58f0\u660e\uff0ciota\u4e3a0\uff0c\u5373 1 << 0 \u76f8\u5f53\u4e8e2**0\uff0c\u6240\u4ee5a==1\nb \/\/ \u8868\u8fbe\u5f0f\u540c\u4e0a\u4e3a1 << iota iota\u7d2f\u52a0\u4e3a1\uff0c\u5373 1 << 1 \u76f8\u5f53\u4e8e2**1\uff0c\u6240\u4ee5a==2\nc \/\/ \u8868\u8fbe\u5f0f\u540c\u4e0a\u4e3a1 << iota iota\u7d2f\u52a0\u4e3a2\uff0c\u5373 1 << 2 \u76f8\u5f53\u4e8e2**1\uff0c\u6240\u4ee5a==4\n)<\/code><\/pre>\n\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2aWeekday\u547d\u540d\u7c7b\u578b\uff0c\u7136\u540e\u4e3a\u4e00\u5468\u7684\u6bcf\u5929\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5e38\u91cf\uff0c\u4ece\u5468\u65e50\u5f00\u59cb\u3002\u5728\u5176\u5b83\u7f16\u7a0b\u8bed\u8a00\u4e2d\uff0c\u8fd9\u79cd\u7c7b\u578b\u4e00\u822c\u88ab\u79f0\u4e3a\u679a\u4e3e\u7c7b\u578b\u3002<\/p>\n
type Weekday int\n\nconst (\n Sunday Weekday = iota\n Monday\n Tuesday\n Wednesday\n Thursday\n Friday\n Saturday\n)\n\/\/ \u5468\u4e00\u5c06\u5bf9\u5e940\uff0c\u5468\u4e00\u4e3a1\uff0c\u5982\u6b64\u7b49\u7b49\u3002<\/code><\/pre>\n\u4e0b\u9762\u662f\u4e00\u4e2a\u66f4\u590d\u6742\u7684\u4f8b\u5b50\uff0c\u6bcf\u4e2a\u5e38\u91cf\u90fd\u662f1024\u7684\u5e42\uff1a<\/p>\n
const (\n _ = 1 << (10 * iota)\n KiB \/\/ 1024\n MiB \/\/ 1048576\n GiB \/\/ 1073741824\n TiB \/\/ 1099511627776 (exceeds 1 << 32)\n PiB \/\/ 1125899906842624\n EiB \/\/ 1152921504606846976\n ZiB \/\/ 1180591620717411303424 (exceeds 1 << 64)\n YiB \/\/ 1208925819614629174706176\n)<\/code><\/pre>\n\u4e0d\u8fc7iota\u5e38\u91cf\u751f\u6210\u89c4\u5219\u4e5f\u6709\u5176\u5c40\u9650\u6027\u3002\u4f8b\u5982\uff0c\u5b83\u5e76\u4e0d\u80fd\u7528\u4e8e\u4ea7\u751f1000\u7684\u5e42\uff08KB\u3001MB\u7b49\uff09\uff0c\u56e0\u4e3aGo\u8bed\u8a00\u5e76\u6ca1\u6709\u8ba1\u7b97\u5e42\u7684\u8fd0\u7b97\u7b26\u3002<\/p>\n
\u516d \u5e38\u91cf\u7684\u8fd0\u7b97<\/h3>\n
\u6240\u6709\u5e38\u91cf\u7684\u8fd0\u7b97\u90fd\u53ef\u4ee5\u5728\u7f16\u8bd1\u671f\u5b8c\u6210\uff0c\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u8fd0\u884c\u65f6\u7684\u5de5\u4f5c\uff0c\u4e5f\u65b9\u4fbf\u5176\u4ed6\u7f16\u8bd1\u4f18\u5316\u3002\u5f53\u64cd\u4f5c\u6570\u662f\u5e38\u91cf\u65f6\uff0c\u4e00\u4e9b\u8fd0\u884c\u65f6\u7684\u9519\u8bef\u4e5f\u53ef\u4ee5\u5728\u7f16\u8bd1\u65f6\u88ab\u53d1\u73b0\uff0c\u4f8b\u5982\u6574\u6570\u9664\u96f6\u3001\u5b57\u7b26\u4e32\u7d22\u5f15\u8d8a\u754c\u3001\u4efb\u4f55\u5bfc\u81f4\u65e0\u6548\u6d6e\u70b9\u6570\u7684\u64cd\u4f5c\u7b49\u3002<\/p>\n
\u5e38\u91cf\u95f4\u7684\u6240\u6709\u7b97\u672f\u8fd0\u7b97\u3001\u903b\u8f91\u8fd0\u7b97\u548c\u6bd4\u8f83\u8fd0\u7b97\u7684\u7ed3\u679c\u4e5f\u662f\u5e38\u91cf\uff0c\u5bf9\u5e38\u91cf\u7684\u7c7b\u578b\u8f6c\u6362\u64cd\u4f5c\u6216\u4ee5\u4e0b\u51fd\u6570\u8c03\u7528\u90fd\u662f\u8fd4\u56de\u5e38\u91cf\u7ed3\u679c\uff1alen\u3001cap\u3001real\u3001imag\u3001complex\u548cunsafe.Sizeof<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5e38\u91cf \u4e00 \u5e38\u91cf\u4ecb\u7ecd \u200b \u53d8\u91cf\u6307\u7684\u662f\u503c\u53ef\u4ee5\u88ab\u6539\u7684\u91cf\uff0c\u5e38\u91cf\u6307\u7684\u5219\u662f\u503c\u4e0d\u53ef\u4ee5\u88ab\u6539\u53d8\u7684\u91cf\uff0c\u5728Go\u8bed\u8a00\u4e2d\uff0c\u5e38\u91cf\u7684\u503c\u5728\u7f16\u8bd1 […]<\/p>\n","protected":false},"author":3,"featured_media":2587,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,446],"tags":[260,261,263,262],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1898"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1898"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1898\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/media\/2587"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}