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When to use in vs ref vs out
...use the parameter keyword out instead of ref . While I (I think) understand the difference between the ref and out keywords (that has been asked before ) and the best explanation seems to be that ref == in and out , what are some (hypothetical or code) examples where I should always use...
How do the post increment (i++) and pre increment (++i) operators work in Java?
...=>
i=5 + 7 + 8; (a=8)
The main point is that ++a increments the value and immediately returns it.
a++ also increments the value (in the background) but returns unchanged value of the variable - what looks like it is executed later.
...
What is The Rule of Three?
...antics.
This means that objects are implicitly copied in various contexts,
and we should understand what "copying an object" actually means.
Let us consider a simple example:
class person
{
std::string name;
int age;
public:
person(const std::string& name, int age) : name(name), ag...
使用CSplitterWnd实现拆分窗口（多视图显示） - C/C++ - 清泛网 - 专注C/C++及内核技术
...s, CCreateContext* pContext)
{
// TODO: Add your specialized code here and/or call the base class
if(!m_wndSplitter.CreateStatic(this,1,2))
{
return FALSE;
}
CRect rect;
GetClientRect(&rect);
if(!m_wndSplitter.CreateView(0,0,RUNTIME_CLASS(CTest),CSize(rect.Width()/4,rect.Height(...
Get filename and path from URI from mediastore
...
In the newest Android version (KitKat) this gives an error: the path String is null.
– Christopher Masser
Nov 29 '13 at 11:35
...
Difference between java.util.Random and java.security.SecureRandom
My team got handed over some server side code (in Java) that generates random tokens and I have a question regarding the same -
...
Set the maximum character length of a UITextField
...vely simple to get this functionality by setting the text field's delegate and implementing the following delegate method:
Objective-C
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
// Prevent crashing undo bug – s...
What's the use of Jade or Handlebars when writing AngularJs apps
...e is completely unrealistic. taking the source of the page I'm viewing now converts 2320 lines to 1580 ( Using html2jade ). Thats more than 700 lines of time wasted for whoever wrote all the stackoverflow templates
– Philipp Gayret
Feb 5 '14 at 18:11
...
What are JavaScript's builtin strings?
..., Infinity, true, false, and "[object Object]". Some of them can be easily converted to strings, e.g. 1/!1+[] gives "Infinity".
I have analyzed different build-in methods for arrays [], objects {}, regular expressions /(?:)/, numbers 1.1, strings "1", and discovered one beautiful method of RegExp ob...
What's the algorithm to calculate aspect ratio?
...8:1.
If so, what you need to do is find the greatest common divisor (GCD) and divide both values by that. The GCD is the highest number that evenly divides both numbers. So the GCD for 6 and 10 is 2, the GCD for 44 and 99 is 11.
For example, a 1024x768 monitor has a GCD of 256. When you divide bot...