{"id":96669,"date":"2020-04-22T06:58:43","date_gmt":"2020-04-21T22:58:43","guid":{"rendered":"http:\/\/4563.org\/?p=96669"},"modified":"2020-04-22T06:58:43","modified_gmt":"2020-04-21T22:58:43","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e8%ae%a1%e7%ae%97%e9%a1%ba%e5%ba%8f%e4%bc%9a%e5%bd%b1%e5%93%8d%e6%b5%ae%e7%82%b9%e6%95%b0%e6%b1%82%e5%92%8c%e7%9a%84%e7%b2%be%e5%ba%a6%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=96669","title":{"rendered":"\u4e3a\u4ec0\u4e48\u8ba1\u7b97\u987a\u5e8f\u4f1a\u5f71\u54cd\u6d6e\u70b9\u6570\u6c42\u548c\u7684\u7cbe\u5ea6\uff1f"},"content":{"rendered":"
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\u4e3a\u4ec0\u4e48\u8ba1\u7b97\u987a\u5e8f\u4f1a\u5f71\u54cd\u6d6e\u70b9\u6570\u6c42\u548c\u7684\u7cbe\u5ea6\uff1f <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : Qzier <\/span> <\/i> 70<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n
sum = 0 for i in range(1, 501):     sum += 1 \/ i print(sum)  sum = 0 for i in range(500, 0, -1):     sum += 1 \/ i print(sum) <\/code><\/pre>\n
\u4e24\u79cd\u7ed3\u679c\u7684\u7cbe\u5ea6\u4e3a\u4f55\u4e0d\u540c\uff1f<\/p>\n
6.79282342999052 6.7928234299905235 <\/code><\/pre>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (6<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : yexiaoxing <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 sum \u672c\u8eab\u4e5f\u662f\u4e2a\u6d6e\u70b9\u6570                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : msg7086 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6d6e\u70b9\u8ba1\u7b97\u6bcf\u6b21\u90fd\u53ef\u80fd\u4ea7\u751f\u8bef\u5dee\uff0c\u8ba1\u7b97\u987a\u5e8f\u5f53\u7136\u4f1a\u5f71\u54cd\u7ed3\u679c\u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : nalzok <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8003\u8651\u8fd9\u4e2a\u66f4\u7b80\u5355\u7684\u4f8b\u5b50<\/p>\n
    >>> (1 + 0.0000000000000001) + 0.0000000000000001
    1.0
    >>> 1 + (0.0000000000000001 + 0.0000000000000001)
    1.0000000000000002<\/p>\n
    \u81f3\u4e8e\u4e3a\u4ec0\u4e48\u5462\uff0c\u56e0\u4e3a<\/p>\n
    >>> 1 + 0.0000000000000001
    1.0
    >>> 1 + 0.0000000000000002
    1.0000000000000002<\/p>\n
    \u7b80\u5355\u6765\u8bf4\uff0c0.0000000000000001 \u52a0\u5230 1 \u4e0a\u4e4b\u540e\u5c31\u56e0\u4e3a\u7cbe\u5ea6\u6709\u9650\u7684\u5173\u7cfb\u88ab discard \u6389\u4e86\uff1b\u4f46\u662f\u5982\u679c\u4f60\u5148\u628a\u4e24\u4e2a 0.0000000000000001 \u5408\u6210\u4e00\u4e2a 0.0000000000000002 \u518d\u52a0\u5230 1 \u4e0a\u9762\uff0c\u90a3\u4e48\u8fd9\u4e2a\u6570\u5b57\u5c31\u4f1a\u56e0\u4e3a\u8db3\u591f\u5927\u800c\u4e0d\u4f1a\u88ab discard                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : Mutoo <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8bef\u5dee\u4e3b\u8981\u6765\u81ea\u65e0\u6cd5\u7528\u4e8c\u8fdb\u5236\u7cbe\u786e\u8868\u8fbe\u7684\u5341\u8fdb\u5236\u3002\u4e0d\u540c\u7684\u7d2f\u5bb6\u987a\u5e8f\u4f1a\u5bfc\u81f4\u8fd9\u6837\u7684\u5341\u8fdb\u5236\u51fa\u73b0\u7684\u60c5\u51b5\u4e0d\u540c\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : hobochen <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Mutoo \u8bef\u5dee\u4e0d\u662f\u6d6e\u70b9\u6570\u672c\u8eab\u7cbe\u5ea6\u6709\u4e0a\u9650\u5417\uff1f\u548c\u8fdb\u5236\u8f6c\u6362\u6ca1\u5173\u7cfb\u5427\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Mutoo <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @hobochen \u6d89\u53ca\u5230\u5341\u8fdb\u5236\u5c0f\u6570\uff0c\u5173\u7cfb\u5c31\u5927\u4e86\u3002\u7ecf\u5178\u7684 0.1+0.2 != 0.3                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    \u4e3a\u4ec0\u4e48\u8ba1\u7b97\u987a\u5e8f\u4f1a\u5f71\u54cd\u6d6e\u70b9\u6570\u6c42\u548c\u7684\u7cbe…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/96669"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=96669"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/96669\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=96669"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=96669"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=96669"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}