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Unicode与UTF-8互转(C语言实现) - C/C++ - 清泛网 - 专注C/C++及内核技术
Unicode与UTF-8互转(C语言实现)1. 基础1.1 ASCII码我们知道, 在计算机内部, 所有的信息最终都表示为一个二进制的字符串. 每一个二进制位(bit)有0和1两种状态, 因此...1. 基础
1.1 ASCII码
我们知道, 在计算机内部, 所有的信息最终都表...
SQL query return data from multiple tables
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Part 1 - Joins and Unions
This answer covers:
Part 1
Joining two or more tables using an inner join (See the wikipedia entry for additional info)
How to use a union query
Left and Right Outer Joins (this stackOverflow answer ...
Principal component analysis in Python
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How to normalize a NumPy array to within a certain range?
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audio /= np.max(np.abs(audio),axis=0)
image *= (255.0/image.max())
Using /= and *= allows yo...
How to compare two colors for similarity/difference
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What does `someObject.new` do in Java?
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It's the way to instantiate a non-static inner class from outside the containing class body, a...
How to clear the canvas for redrawing
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const context = canvas.getContext('2d');
context.clearRect(0, 0, canvas.width, canvas.height...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
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The order of evaluation of subexpressions, including
the arguments of a function call and
oper...
How to get the seconds since epoch from the time + date output of gmtime()?
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If you got here because a search engine told you this is how to get the Unix timestamp, stop r...
Android OpenGL ES and 2D
...have your canvas set up, you start by calling something like:
gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
After that you're ready to render a sprite.
First, you'll need to load the sprite into a texture: http://qdevarena.blogspot.com/2009/02/how-to-load-texture-in-android-opengl.html
However, this is th...