大约有 9,000 项符合查询结果(耗时:0.0148秒) [XML]

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记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...oDB本身有一个mongoimport工具可供使用,不过它只接受json、csv等格式的源文件,不适合我的需求,所以我没用,而是用PHP写了一个脚本,平稳运行了一段时间后,我发现数据导入的速度下降了,同时PHP抛出异常: cursor timed out (time...
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Attach a file from MemoryStream to a MailMessage in C#

...mplified snippet for sending an in-memory string as an email attachment (a CSV file in this particular case). using (var stream = new MemoryStream()) using (var writer = new StreamWriter(stream)) // using UTF-8 encoding by default using (var mailClient = new SmtpClient("localhost", 25)) using (...
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什么你得学些 TCP 的知识? - 环境配置 - 清泛IT社区,创新赋能!

...的接收确认通知之后才能发送。这是 Nagle 算法导致的。转换到连接的另一端,HAProxy 需要决定如何确认这两个包。在 1.4.18 版本中(我们正在用的版本),它是通过 TCP 延迟确认通知来实现的。延迟确认对 Nagle 算法有非常糟糕的...
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Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...上。 我们打开iat.txt文件,把disasm.txt文件中的地址全部转换成函数名,例如: 代码: 8048979: 68 00 00 00 00 push $0x0 804897e: 68 03 00 00 00 push $0x3 8048983: e8 88 fe ff ff call 0x8048810 转换成 ...
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App Inventor 2 TaifunImage 拓展,图像高级处理功能,剪裁,压缩,翻转等 ...

...件 示已创建图像块的事件。将提供文件名列结果。 示图像已旋转的事件。 参数successful示true(成功)或false。参数result在错误时提供错误信息,成功时提供文件名。 示图像已缩放的事件。 参数succes...
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Script to get the HTTP status code of a list of urls?

..._connect};%{size_download};%{speed_download}\n' < url.lst | tee results.csv It just outputs a bunch of data into a csv file that can be imported into any office tool. share | improve this answe...
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Get bitcoin historical data [closed]

...tually, you CAN get the whole Bitcoin trades history from Bitcoincharts in CSV format here : http://api.bitcoincharts.com/v1/csv/ it is updated twice a day for active exchanges, and there is a few dead exchanges, too. EDIT: Since there are no column headers in the CSVs, here's what they are : colu...
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How to get key names from JSON using jq

... To print keys on one line as csv: echo '{"b":"2","a":"1"}' | jq -r 'keys | [ .[] | tostring ] | @csv' Output: "a","b" For csv completeness ... to print values on one line as csv: echo '{"b":"2","a":"1"}' | jq -rS . | jq -r '. | [ .[] | tostring ] ...
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How do you view ALL text from an ntext or nvarchar(max) in SSMS?

... that column and then right-clicking on it and then saving the result as a CSV file. To view the result open the CSV file with a text editor (NOT Excel). Funny enough, when I tried to run the same query, but having Results to File enabled, the output was truncated using the Results to Text limit. T...
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app inventor 2 有HexToString组件吗? - App Inventor 2 中文网 - 清泛IT社区,创新赋能!

同这篇帖子《什么是 Hex 编码方式?》:https://bbs.tsingfun.com/thread-2700-1-1.html 使用 ByteArray 拓展 的 ToHex 方法可以实现将无符号数字转换其十六进制示。