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Why does casting int to invalid enum value NOT throw exception?
...o created .NET. An enum is backed by another value type (int, short, byte, etc), and so it can actually have any value that is valid for those value types.
I personally am not a fan of the way this works, so I made a series of utility methods:
/// <summary>
/// Utility methods for enum value...
Spring MVC: How to perform validation?
... business validation logic, conditional validation across multiple fields, etc.), or for some reason you cannot use method 1, use manual validation. It is a good practice to separate the controller’s code from the validation logic. Don't create your validation class(es) from scratch, Spring provid...
How to remove/ignore :hover css style on touch devices
...gs have identifying information about browser, renderer, operating system, etc. It would be up to you to decide what devices are "touch" versus non-touch. You may be able to find this information available somewhere and map it into your system.
A. If you're allowed to ignore old browsers, you just ...
What is recursion and when should I use it?
...lude traversing hierarchies, e.g. website crawlers, directory comparisons, etc.
Conclusion
In practical terms, recursion makes the most sense whenever you need iterative branching.
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How should I unit test threaded code?
... test the complicated behaviour (multi- threading, asynchronous execution, etc...)
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How is “=default” different from “{}” for default constructor and destructor?
...tions (default constructor, copy/move constructors/assignment, destructors etc) means something very different from simply doing {}. With the latter, the function becomes "user-provided". And that changes everything.
This is a trivial class by C++11's definition:
struct Trivial
{
int foo;
};
I...
How to prevent Browser cache for php site
...uery part of the URI for the linked file.
(Can be used for css, js, images etc.)
For development:
<link rel="stylesheet" href="style.css?<?php echo date('Y-m-d_H:i:s'); ?>">
For production (where caching is mostly a good thing):
<link rel="stylesheet" type="text/css" href="style.c...
What does the CSS rule “clear: both” do?
... 90% of CSS beginners: why the background of a container element is not stretched when it holds floated elements. It's because the container element is a POOL here and the POOL has no idea how many objects are floating, or what the length or breadth of the floated elements are, so it simply won't s...
What's the better (cleaner) way to ignore output in PowerShell? [closed]
...me who are fluent in PowerShell aren't even familiar with [void], $null =, etc., and just because those may execute faster or take less keystrokes to type, doesn't mean they're the best way to do what you're trying to do, and just because a language gives you quirky syntax doesn't mean you should us...
JavaScript: Class.method vs. Class.prototype.method
... class itself...? (That's like saying a subset of a set is the set itself, etc...)
– Andrew
Apr 2 at 5:03
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