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MFC OnEraseBkgnd浅析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...数，这时就和窗口缺省的背景刷相关了。缺省的OnEraseBkGnd操作使用窗口的缺省背景刷刷新背景(一般情况下是白刷),而随后你又自己重画背景造成屏幕闪动。
另外一个问题是OnEraseBkGnd不是每次都会被调用的。如果你调用Invalidate的...
PHP Session Security
...as to change during the session use, it would be extremely suspicious and most likely an attack. I never said you can use it alone. If you combine it with the other techniques you have a much more secure site.
– grom
Apr 27 '10 at 23:42
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Can a local variable's memory be accessed outside its scope?
...n and replaced with a football stadium, and you are going to die in an explosion while you are sneaking around.
You don't know what is going to happen; when you checked out of the hotel and stole a key to illegally use later, you gave up the right to live in a predictable, safe world because you c...
How to check if Location Services are enabled?
I'm developing an app on Android OS. I don't know how to check if Location Services are enabled or not.
22 Answers
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How big can a MySQL database get before performance starts to degrade
At what point does a MySQL database start to lose performance?
15 Answers
15
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Does the default constructor initialize built-in types?
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For all practical purposes - no.
However for implementations that are technically compliant with the C++ standard, the answer is that it depends whether the object is POD or not and on how you initialize it.
According to the C++ standard:
MyNo...
Chrome browser reload options new feature
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I couldn't get this to work on OS X using Chrome 23.0.1271.95. Is it a Windows only feature?
– Laurent
Dec 10 '12 at 4:14
6
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Deep Learning（深度学习）学习笔记整理系列之（二） - 大数据 & AI - 清泛...
...就塞到这了）。
四、关于特征
特征是机器学习系统的原材料，对最终模型的影响是毋庸置疑的。如果数据被很好的表达成了特征，通常线性模型就能达到满意的精度。那对于特征，我们需要考虑什么呢？
4.1、特征表...
Deep Learning（深度学习）学习笔记整理系列之（二） - 大数据 & AI - 清泛...
...就塞到这了）。
四、关于特征
特征是机器学习系统的原材料，对最终模型的影响是毋庸置疑的。如果数据被很好的表达成了特征，通常线性模型就能达到满意的精度。那对于特征，我们需要考虑什么呢？
4.1、特征表...
Deep Learning（深度学习）学习笔记整理系列之（二） - 大数据 & AI - 清泛...
...就塞到这了）。
四、关于特征
特征是机器学习系统的原材料，对最终模型的影响是毋庸置疑的。如果数据被很好的表达成了特征，通常线性模型就能达到满意的精度。那对于特征，我们需要考虑什么呢？
4.1、特征表...