大约有 16,000 项符合查询结果(耗时:0.0170秒) [XML]

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【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛,有思想、有深度

...用send_LL(0x53,2402M)(注:2402M为信道频率)。这里还有一个问题,设备B怎么知道这个数据包是发给自己的还是其他人的,为此BLE引入access address概念,用来指明接收者身份,其中,0x8E89BED6这个access address比较特殊,它表示要发给周...
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创业公司倒闭大潮 教你正确烧钱速度? - 资讯 - 清泛网 - 专注C/C++及内核技术

...:月净现金消耗量只有10万,却希望融600-800万。我第一个问题就会问: “老兄,请问如果你每月只烧10万,到底为什么你要融这么多钱?” 不管他们背地里在想什么,我最后听到的答案通常是:因为我办得到。 但“我办得到...
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mysql blob大小配置介绍 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

...种处理大数据对象的方法是把双刃剑,它有可能引发一些问题,如存储的二进制文件过大,会使数据库的性能下降。在数据库中存放体积较大的多媒体对象就是应用程序处理BLOB的典型例子。 mysql BLOB类型 MySQL中,BLOB是个类...
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mysql blob大小配置介绍 - 爬虫/数据库 - 清泛IT社区,为创新赋能!

...种处理大数据对象的方法是把双刃剑,它有可能引发一些问题,如存储的二进制文件过大,会使数据库的性能下降。在数据库中存放体积较大的多媒体对象就是应用程序处理BLOB的典型例子。 mysql BLOB类型 MySQL中,BLOB是个类...
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Handle Guzzle exception and get HTTP body

...gt;getResponse(); $responseBodyAsString = $response->getBody()->getContents(); } share | improve this answer | follow | ...
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How to Remove Array Element and Then Re-Index Array?

...r methods, but is there a reason this answer is so bad? Is it performance? etc? Same reason I am on SO, to learn as well as teach. – frostymarvelous Apr 23 '14 at 14:53 ...
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使用TokuMX配置Replica Set集群 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

... use admin db.shutdownServer() 有任何关于MongoDB/TokuMX方面的问题,欢迎回复评论。集群 TokuMX MongoDB
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Go > operators

...ed to be) the same. The reason for this is that emitting exactly 1 SHL/SHR/etc instruction to implement the shift operator is the best thing that an optimizing C/C++ compiler can do when the context does not tell it anything about 'x' and 'y'. And, if the compiler knows for a fact that the code has ...
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Cannot simply use PostgreSQL table name (“relation does not exist”)

...each schema in order. Just like PATH in the shell or include_path in PHP, etc. You can check your current schema search path: SHOW search_path "$user",public You can change your schema search path: SET search_path TO showfinder,public; See also http://www.postgresql.org/docs/8.3/static/ddl...
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node.js hash string?

...t the issue with : sha256("\xac"), "\xd1", "\xb9", "\xe2", "\xbb", "\x93", etc... Other languages (like PHP, Python, Perl...) and my solution with .update(data, "binary") : sha1("\xac") //39527c59247a39d18ad48b9947ea738396a3bc47 Nodejs by default (without binary) : sha1("\xac") //f50eb35d94f1...