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What does “program to interfaces, not implementations” mean?
One stumbles upon this phrase when reading about design patterns.
7 Answers
7
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Why would iterating over a List be faster than indexing through it?
Reading the Java documentation for the ADT List it says:
5 Answers
5
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Do htmlspecialchars and mysql_real_escape_string keep my PHP code safe from injection?
...t;img src= "' . htmlspecialchars($_GET['imagesrc']) . '" />';
We're already inside an HTML tag, so we don't need < or > to do anything dangerous. Our attack vector could just be javascript:alert(document.cookie)
Now resultant HTML looks like
<img src= "javascript:alert(document.cooki...
Should unit tests be written for getter and setters?
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@GeorgiiOleinikov Have your read my other answer below? It pretty much in line with your view.
– Izhaki
Apr 10 '19 at 19:51
add ...
How to use Boost in Visual Studio 2010
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While Nate's answer is pretty good already, I'm going to expand on it more specifically for Visual Studio 2010 as requested, and include information on compiling in the various optional components which requires external libraries.
If you are using headers only...
When should you NOT use a Rules Engine? [closed]
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Maybe someone will find helpful reading a nice article written by Martin Fowler about DSL-s: "Will DSLs allow business people to write software rules without involving programmers?" martinfowler.com/bliki/BusinessReadableDSL.html
– Rob...
PSQLException: current transaction is aborted, commands ignored until end of transaction block
...othing is wrong.
//But remember, we are in a TRANSACTION! so keep reading.
System.out.println("statement.execute done");
statement.close();
}
catch (SQLException sqle)
{
System.out.println("keep on truckin, keep using " +
...
How do I make a splash screen?
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Further reading:
App Launch time & Themed launch screens (Android Performance Patterns Season 6 Ep. 4)
Splash screen in Android: The right way
Old answer:
HOW TO: Simple splash screen
This answers shows you how to display a...
std::string formatting like sprintf
...e quality-of-life improvement.
C++11
With C++11s std::snprintf, this already became a pretty easy and safe task.
#include <memory>
#include <string>
#include <stdexcept>
template<typename ... Args>
std::string string_format( const std::string& format, Args ... args ...
How to add a touch event to a UIView?
...except for the swipe gesture). If you need to for your project, you should read the gesture recognizer documentation. It is fairly understandable and helpful.
Known issues with my examples above: (1) Pan view resets its frame on next gesture event. (2) Swipe view comes from the wrong direction on th...