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The Ruby %r{ } expression
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\. => contains a dot
(gif|jpg|jpeg|png) => then, either one of these extensions
$ => the end, nothing after it
i => case insensitive
And it's the same as writing /\.(gif|jpg|jpeg|png)$/i.
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How to get image height and width using java?
...mparison done by user194715, i'll take your suggestion for performance and png consideration! Thank you!
– ah-shiang han
Nov 2 '15 at 5:50
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how to unit test file upload in django
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What are the appropriate headers for JPEG and PNG?
– antonagestam
Jun 23 '15 at 19:34
2
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提升速度：XP注册表与驱动优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...时间，如3D Studio Max，只需右键点击这个进程，再把鼠标指针向下移动到“Set Priority>(设置优先级)”，然后选择你想要这个程序处在哪个优先级。当我接收email时，我会把3DMAX设为“标准”，但当我离开计算机的时候，我会把它的...
How to flip UIImage horizontally?
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Objective-C
UIImage* sourceImage = [UIImage imageNamed:@"whatever.png"];
UIImage* flippedImage = [UIImage imageWithCGImage:sourceImage.CGImage
scale:sourceImage.scale
orientation:UIImageOrientationUpMirrored...
How can you profile a Python script?
...ut()):
code_to_profile()
Either of these will generate a pycallgraph.png file similar to the image below:
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Error in plot.new() : figure margins too large in R
...nt for me. I had to increase the image size, or decrease the resolution in png(filename="myfile.png", res=150, width = 1000, height = 1000)
– vanao veneri
Mar 6 '17 at 10:37
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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
...机设备
从机，从机只能广播并等待主机的连接。例如智能手环，是作为BLE的从机设备（以上的数据透传演示BLE硬件就是作为从机的）
IO口控制
可以使用厂商提供的App进行IO口控制，也可以使用App Inventor 2 编程实现控制...
安卓防止息屏方案深度调研 - 小米红米MIUI专项解决 - App应用开发 - 清泛IT...
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2. 省电模式：即使关闭系统省电模式，MIUI的"应用智能省电"仍会独立生效
3. 神隐模式（Ghost Mode）：后台限制极其激进，甚至影响前台行为
4. 开发者选项中的"MIUI优化"：开启状态下会修改标准API行为
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How to check the extension of a filename in a bash script?
...it here in case it helps someone. if [[ ( $file == *.csv ) || ( $file == *.png ) ]]
– joelostblom
Feb 7 '15 at 1:09
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