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C library function to perform sort

... qsort() is the function you're looking for. You call it with a pointer to your array of data, the number of elements in that array, the size of each element and a comparison function. It does its magic and your array is sorted in-place. An example follows: #include <stdio.h> #inclu...
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Is it possible to print a variable's type in standard C++?

... C++11 update to a very old question: Print variable type in C++. The accepted (and good) answer is to use typeid(a).name(), where a is a variable name. Now in C++11 we have decltype(x), which can turn an expression into a type. And decltype() comes with its own...
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Providing white space in a Swing GUI

... components. 1.) BorderLayout : Overloaded Constructor : BorderLayout(int horizontalGap, int verticalGap) Getter and setter methods For Horizontal Spacing : BorderLayout.getHgap() and BorderLayout.setHgap(int hgap) For Vertical Spacing : BorderLayout.getVgap() and BorderLayout.setVgap() 2....
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Avoid trailing zeroes in printf()

I keep stumbling on the format specifiers for the printf() family of functions. What I want is to be able to print a double (or float) with a maximum given number of digits after the decimal point. If I use: ...
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What is the difference between an int and a long in C++?

...e the same, but for example on Alpha systems a long was 64 bits whereas an int was 32 bits. This article covers the rules for the Intel C++ compiler on variable platforms. To summarize: OS arch size Windows IA-32 4 bytes Windows Intel 64 4 bytes Window...
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How do you calculate log base 2 in Java for integers?

I use the following function to calculate log base 2 for integers: 10 Answers 10 ...
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[since C++11] std::array的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术

...有基类、没有虚函数. 因此不支持这样的构造方法:array<int, 3> a({1, 2, 4}); 初始化array最常用的方法是使用赋值运算符和初始化列表: array<int, 3> a = {1, 2, 3}; array<int, 100> b = {1, 2, 3}; // a[0] ~ a[2] = 1, 2, 3; a[3] ~ a[99] = 0, 0, 0 ... 0; ar...
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Android: Expand/collapse animation

...ges. It works great for me. public static void expand(final View v) { int matchParentMeasureSpec = View.MeasureSpec.makeMeasureSpec(((View) v.getParent()).getWidth(), View.MeasureSpec.EXACTLY); int wrapContentMeasureSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); ...
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js中int和string互换(js int转string,js string转int) - 更多技术 - 清...

js中int和string互换(js int转string,js string转int)js-int-string-interchangeJavascript 本身就是弱类型的语言,通常情况下,不用自己刻意去转。若需要转换的话,可以使用toString()、parseInt()函数等。Javascript 本身就是弱类型的语言,通常情...
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Captured variable in a loop in C#

I met an interesting issue about C#. I have code like below. 9 Answers 9 ...