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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
...2G，这是INT整数范围决定的。
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最后一个求助方式就是官方论坛了，那里的国际友人建议我检查一下是不是索引不佳所致，死马当活马医，我激活了Profiler记录慢操作：
mongo> use <DB>
mongo> db.setProfilingLevel(1);
不过结果显示基...
Syntax highlighting/colorizing cat
... "\033[31m"
fi
cat $1
echo -en "\033[0m"
The above (on a terminal that supports those escape sequences) will print any text file as 'bold', and will print any binary file as red. You can use strings instead of cat for printing binary files and you can enhance the logic to make it suit your needs.
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AppInventor2 二进制文件的读写 - App Inventor 2 中文网 - 清泛网 - 专注C/C++及内核技术
...这个拓展，直接可以保存二进制数据到文件，拓展请自行下载：
二进制文件的读取/写入可使用此拓展，下载地址：https://bbs.tsingfun.com/thread-1648-1-1.html
更多请参考这里。
AppInventor,AppInventor2
图片轮播拓展 - ColinTreeSlideShow - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
... - ImageWhileLoading (v2新增) - 不会显示在代码块属性列表中
下载地址最后更新 2017.9.24 (v2)下载1(本站)样例aia样例apk - Appinventor样例apk - Thunkable
模拟器不能正常朗读文本的解决方法 - App应用开发 - 清泛IT社区，为创新赋能！
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在模拟器内打开应用商店（如 Google Play Store 或其他 APK 下载平台）。搜索并安装 Google Text-to-Speech Engine（Google 文字转语音引擎）。安装完成后，进入系统设置 → 语言和输入法 → 文字转语音 → 选择 Google TTS 引擎作为默认引擎...
CustomWebView拓展：WebViewer的扩展版本，具有更高的自定义性和灵活性 - A...
...您的应用添加到浏览器列表中
使用内置 DownloadHelper 插件下载文件
滚动更改事件和函数以滚动到特定位置
动态创建和删除 WebView
广告拦截器
全屏视频功能（OnShowCustomView 和 OnHideCustomView）
暂停和恢复 WebView
获取内部历史记...
Embedding Python in an iPhone app
So it's a new millennium; Apple has waved their hand; it's now legal to include a Python interpreter in an iPhone (App Store) app.
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Facebook Callback appends '#_=_' to Return URL
Facebook callback has started appending #_=_ hash underscore to the Return URL
23 Answers
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Update a record without first querying?
... @BrainSlugs83 - try using EF across link servers that only support OpenQuery - lots of fun. Sometimes you absolutely need raw SQL to get the job done. Not always can you draw the code into isolation for testing. Its not a perfect world out there.
– barrypicker
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Why does a return in `finally` override `try`?
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According to ECMA-262 (5ed, December 2009), in pp. 96:
The production TryStatement : try Block Finally is evaluated as follows:
Let B be the result of evaluating Block.
Let F be the result of evaluating Finally.
If F.type is normal, return B.
Return F.
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