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What's the advantage of a Java enum versus a class with public static final fields?
...ing to work more in Java. I expected to learn that enums in Java were basically equivalent to those in C# but apparently this is not the case. Initially I was excited to learn that Java enums could contain multiple pieces of data which seems very advantageous ( http://docs.oracle.com/javase/tutorial...
In MySQL, how to copy the content of one table to another table within the same database?
...y the content of one table to another table within the same database. Basically, I would like to insert to a table from another table. Is there easy way of doing this?
...
How to handle anchor hash linking in AngularJS
...croll().
Here's the (crappy) documentation.
And here's the source.
Basically you just inject it and call it in your controller, and it will scroll you to any element with the id found in $location.hash()
app.controller('TestCtrl', function($scope, $location, $anchorScroll) {
$scope.scrollTo =...
Sleep for milliseconds
... facilities:
#include <chrono>
#include <thread>
std::this_thread::sleep_for(std::chrono::milliseconds(x));
Clear and readable, no more need to guess at what units the sleep() function takes.
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How do I use itertools.groupby()?
I haven't been able to find an understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this:
...
C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...释放对象拥有权限、引用计数等，控制权转移等）。auto_ptr 即是一种常见的智能指针。
智能指针通常用类模板实现：
template <class T>
class smartpointer
{
private:
T *_ptr;
public:
smartpointer(T *p) : _ptr(p) //构造函数
{
}
T& oper...
How to get the width and height of an android.widget.ImageView?
...eight, finalWidth;
final ImageView iv = (ImageView)findViewById(R.id.scaled_image);
final TextView tv = (TextView)findViewById(R.id.size_label);
ViewTreeObserver vto = iv.getViewTreeObserver();
vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
public boolean onPreDraw() {
...
Should one call .close() on HttpServletResponse.getOutputStream()/.getWriter()?
...dy via response.getOutputStream() or response.getWriter() . Should one call .close() on this OutputStream after it has been written to?
...
What's Alternative to Singleton
...singleton in the unit testing because we can test different configurations all at once.
13 Answers
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Reading header data in Ruby on Rails
..."Cookie"]
New way:
request.headers["HTTP_COOKIE"]
To get a Hash with all headers of the request.
request.headers
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