大约有 40,000 项符合查询结果(耗时:0.0407秒) [XML]

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大数据能否拯救中国足球? - 资讯 - 清泛网 - 专注C/C++及内核技术

...难。 未来大数据在足球相关产业中的应用前景到底如何?从球队、球员的日常训练到整个职业联赛球员大数据库的建立,从可穿戴设备到体育赛事转播的制作包装,大数据可介入的发力点又在哪里? 事实上,随着80亿中超(...
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大数据:用数据指导APP运营 - 资讯 - 清泛网 - 专注C/C++及内核技术

...感觉在不知不觉中获得了提升,这一点,非常重要。 3 如何获取数据 获取数据的渠道有很多,而方式基本就是自己做和使用外部工具两种方式。 自己做的话,App可以选择“埋点”、log等方式,而Web可以通过log、日志与按钮埋...
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Unicode与UTF-8互转(C语言实现) - C/C++ - 清泛网 - 专注C/C++及内核技术

...了符号的二进制代码, 却没有规定这 个二进制代码应该如何存储". 比如, 汉字"严"的unicode是十六进制数4E25, 转换成二进制数足足有15位 (100111000100101), 也就是说这个符号的表示至少需要2个字节. 表示其他更大的符号, 可能需要3...
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LINQ-to-SQL vs stored procedures? [closed]

... I cannot get over the performance deficit that is introduced by having to select data out of the database in order to update it (Attach() is also possible, but it's rather poopey) – Ed James Mar 2 '10 at 15:46 ...
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ReactJS Two components communicating

...te is also increasing in complexity, as we need to manage active routes, selected tabs, spinners, pagination controls, and so on. Managing this ever-changing state is hard. If a model can update another model, then a view can update a model, which updates another model, and this, in tur...
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How to check if a line is blank using regex

... answer missed many empty lines in my file, but this caught them all. The union of both regexes catches every case. – elmor Oct 5 '17 at 0:16 ...
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Does a foreign key automatically create an index?

... I'm just about positive that PostgreSQL creates an index. I'm pretty sure MySQL does. Making the index makes a ton of sense, but IT'T NOT REQUIRED. After all, why reference something if every time the DB goes to look it up it has to do a tablescan? – MBCook Ma...
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PowerShell Script to Find and Replace for all Files with a Specific Extension

...recurse | foreach-object{ $wc = [xml](Get-Content $_.fullname) $wc.SelectNodes("//add[@key='Environment'][@value='Dev']") | Foreach-Object {$_.value = 'Demo'} $wc.Save($_.fullname) } share | ...
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Android Eclipse - Could not find *.apk

...is might help you out: Right-click your app project and go to Properties Select Android from left-hand side list Uncheck the "Is Library" checkbox If your app project relies on library projects which are in your workspace, those of course need to have the "Is Library" box checked. ...
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Good PHP ORM Library?

...large dependent datasets. Doctrine is in wide use, no doubt, but if I were selecting an ORM today, Doctrine would NOT be my first choice, or even second ... JM5C. – WebTigers Sep 2 at 15:07 ...