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How to convert NSDate into unix timestamp iphone sdk?
How to convert an NSDate into Unix timestamp? I've read many posts which do the reverse. But I'm not finding anything related to my question.
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c++ boost库 序列化与反序列化 - c++1y / stl - 清泛IT社区，为创新赋能！
1、定义类/结构体序列化函数：
template <typename Archive>
void serialize(Archive& ar, TOrder & obj, const unsigned int version = SERIALIZATION_VERSION)
{
ar & BOOST_SERIALIZATION_NVP(obj.Param)
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Arduino控制RGB三色LED灯实验、程序代码、连线图、仿真 - 创客硬件开发 - ...
RGB三色灯简介
RGB色彩模式包含红绿蓝三种，通过控制红（R）、绿(B)、蓝(G)三种颜色的变化使其相互叠加产生花式颜色。而其颜色值的输出是通过PWM来控制的。RGB三基色按照不同的比例相加合成混色称为相加混色，除相加混色法...
【拍照图片处理】Attempt to invoke virtual method 'boolean android.grap...
在做图片识别App的时候，选择相册图片没有问题，拍照后图片就报错：
Attempt to invoke virtual method 'boolean android.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference
图片大致的处理流程是...
Attempt to invoke virtual method 'boolean android.graphics.Bitmap.comp...
Attempt to invoke virtual method 'boolean android.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference
原因：调用 TaifunImage 时给定的图片路径为空导致的。
解决：指定有效的图片路径，或者拍照...
How to convert a java.util.List to a Scala list
I have this Scala method with below error. Cannot convert into a Scala list.
5 Answers
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How to cast int to enum in C++?
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MSDN: The static_cast operator can explicitly convert an integral value to an enumeration type. If the value of the integral type does not fall within the range of enumeration values, the resulting enumeration value is undefined.
– Kirill Kobelev
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How to check visibility of software keyboard in Android?
... pixels is not sufficient for xxhdpi devices such as the Nexus 4. Consider converting that value to DPs if you really want to use this hacky work-around.
– Paul Lammertsma
Jan 3 '13 at 10:41
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Create a List of primitive int?
... all in one container.
Is my only option, creating an array of int and converting it into a list
In that case also, you will get a List<Integer> only. There is no way you can create List<int> or any primitives.
You shouldn't be bothered anyways. Even in List<Integer> you can...
Does setWidth(int pixels) use dip or px?
...The answer is in TypedValue.applyDimension(). Here's an example of how to convert dips to px in code:
// Converts 14 dip into its equivalent px
Resources r = getResources();
int px = Math.round(TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 14,r.getDisplayMetrics()));
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