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C library function to perform sort
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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...
Is it possible to print a variable's type in standard C++?
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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...
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....
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...
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...
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...
Captured variable in a loop in C#
I met an interesting issue about C#. I have code like below.
9 Answers
9
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