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Virtual/pure virtual explained
...es. What virtual does is to give you polymorphism, that is, the ability to select at run-time the most-derived override of a method.
Consider the following code:
#include <iostream>
using namespace std;
class Base {
public:
void NonVirtual() {
cout << "Base NonVirtual call...
Fluid width with equally spaced DIVs
...g
.box1, .box2, .box3, .box4 { ...
to
#container > div { ...
This selects any div that is the first child of the #container div, and no others below it. To generalize the background colors, you can use the CSS3 nth-order selector, although it's only supported in IE9+ and other modern browse...
How can I debug a HTTP POST in Chrome?
... get list of http queries that happened, while the network console was on. Select one of them in the left
Choose "Headers" tab
Voila!
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SQLite - replace part of a string
...
And if you just want to do it in a query without lasting consequences:
SELECT fieldA, replace(field, 'C:\afolder\', 'C:\anewfolder\'), fieldB FROM table;
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...
ModelState.IsValid == false, why?
...r errors = ModelState
.Where(x => x.Value.Errors.Count > 0)
.Select(x => new { x.Key, x.Value.Errors })
.ToArray();
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Tab Vs Space preferences in Vim
...andtab
else
setlocal noexpandtab
endif
endif
" show the selected options
try
echohl ModeMsg
echon 'set tabstop='
echohl Question
echon &l:ts
echohl ModeMsg
echon ' shiftwidth='
echohl Question
echon &l:sw
echohl ModeMsg
echon ' sts...
How do I access the command history from IDLE?
...
Go into Preferences > Keys. Find the 'history-previous' selection in the list and edit it to Up Arrow.
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Keyboard shortcut for Jump to Previous View Location (Navigate back/forward) in IntelliJ IDEA
...me Intel grafics driver shorcuts on windows. Right click the desktop -> select Screen Resolution -> Click Advanced settings -> Click the vendor tab "Intel(R) ..." -> Hit the graphics properties or similar button -> Select Options and Support tab -> Disable Hotkey functionality.
...
Secret copy to clipboard JavaScript function in Chrome and Firefox?
... function(obj, panelName) // no web page interaction
{
Firebug.chrome.select(obj, panelName);
};
this.keys = function(o)
{
return FBL.keys(o); // the object is from the page, unwrapped
};
this.values = function(o)
{
return FBL.values(o); // the object is from the page, unwrapped
};
...
Can a C# class inherit attributes from its interface?
...e T : Attribute
{
return GetCustomAttributes( type, typeof( T ), false ).Select( arg => (T)arg ).ToArray();
}
/// <summary>Searches and returns attributes.</summary>
/// <typeparam name="T">The type of attribute to search for.</typeparam>
/// <param name="type">Th...