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GIF Animated 扩展：可点击透明背景动画GIF播放器 · App Inventor 2 中文网
...机测试，就会发现图片不会动，只会展示静态图片。那么问题来了，如何展示动图/动画效果呢？有2种思路参考这里。
当然，也可以使用本文介绍的这款拓展~
Gif 动画扩展，可点击，可设置透明背景，效果如下：
参考代码块...
GDB corrupted stack frame - How to debug?
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Those bogus adresses (0x00000002 and the like) are actually PC values, not SP values. Now, when you get this kind of SEGV, with a bogus (very small) PC address, 99% of the time it's due to calling through a bogus function pointer. Note that virtual calls in C++ are implemented ...
NumPy: function for simultaneous max() and min()
...he same for the min value. If I want to find both max and min, I have to call both functions, which requires passing over the (very big) array twice, which seems slow.
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Visual studio long compilation when replacing int with double
...ibrary routines to do the translation, while integer math can just use the CPU instructions. At the time the IEEE defined the standard, they made some choices that were very uncommon in implementation, and especially that long ago much more expensive to implement in microcode, and of course the curr...
In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
I am building a small chat application for friends, but unsure about how to get information in a timely manner that is not as manual or as rudimentary as forcing a page refresh.
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arrayfun can be significantly slower than an explicit loop in matlab. Why?
...lution is clearly the fastest, you can see that defining a function to be called for every x entry is a huge overhead. Just explicitly writing out the computation got us factor 5 speedup. I guess this shows that MATLABs JIT compiler does not support inline functions. According to the answer by gnovi...
诺奖得主谈“双创”：让鼓励创业成为一种文化 - 资讯 - 清泛网 - 专注C/C++...
...重要性。但是要实现“双创”还需要注意以下几个方面的问题：
一是在政策方面要鼓励“双创”。要实现“双创”这个目标，就要对微型企业或中小型企业实行减税，推出鼓励企业家创新精神的专项投资基金，推动互联网+的战...
How does password salt help against a rainbow table attack?
... attack. However, the methods I've seen to implement this don't seem to really make the problem harder.
10 Answers
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Build an iOS app without owning a mac? [closed]
...fter login developer account you can download Xcode IDE's .dmg file
That's all.
Now you just install Xcode and start developing iOS apps and test/debug with Simulator..
2. iPhone/iPad (iOS) app development and Publish to iTunes Store
for publishing your app on iTunes store you need to pay (examp...
What is “Power Save Mode” in IntelliJ IDEA and other Jetbrains IDEs?
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It seems that they do get a LOT of cpu time even when they are in background doing nothing! Still looking for a better solution, as in freezing them while in background and not running the debugger.
– sorin
Apr 1 '15 at 1...