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@class vs. #import
... and use the @class declaration in your header file.
@class does not (usually) remove the need to #import files, it just moves the requirement down closer to where the information is useful.
For Example
If you say @class MyCoolClass, the compiler knows that it may see something like:
MyCoolCl...
What's so bad about Template Haskell?
...on for avoiding Template Haskell is that it as a whole isn't type-safe, at all, thus going against much of "the spirit of Haskell." Here are some examples of this:
You have no control over what kind of Haskell AST a piece of TH code will generate, beyond where it will appear; you can have a value ...
Get all unique values in a JavaScript array (remove duplicates)
...l loop through the array and leave only those entries that pass the given callback function onlyUnique.
onlyUnique checks, if the given value is the first occurring. If not, it must be a duplicate and will not be copied.
This solution works without any extra library like jQuery or prototype.js.
It w...
onKeyPress Vs. onKeyUp and onKeyDown
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Check here for the archived link originally used in this answer.
From that link:
In theory, the onKeyDown and onKeyUp events represent keys being pressed or released, while the onKeyPress event represents a character being typed. The implementation of the the...
NuGet Package Manager errors when trying to update
Opening VS2010 today, the extension manager notified me of an update for NuGet Package Manager.
4 Answers
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Interface vs Base class
... and let's illustrate using C#:
Both a dog and a cat are animals, specifically, quadruped mammals (animals are waaay too general). Let us assume that you have an abstract class Mammal, for both of them:
public abstract class Mammal
This base class will probably have default methods such as:
Fe...
PHP shell_exec() vs exec()
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shell_exec returns all of the output stream as a string. exec returns the last line of the output by default, but can provide all output as an array specifed as the second parameter.
See
http://php.net/manual/en/function.shell-exec.php
http:...
.NET List Concat vs AddRange
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They have totally different semantics.
AddRange modifies the list by adding the other items to it.
Concat returns a new sequence containing the list and the other items, without modifying the list.
Choose whichever one has the semantic...
IIS: Idle Timeout vs Recycle
...mory leaking purposes and system health
The negative impact of both is usually the use of your Session and Application state is lost if you mess with Recycle to a faster time.(logged in users etc will be logged out, if they where about to "check out" all would have been lost" that's why recycle is ...
What is this 'Waiting for Background operation' in Visual Studio 2012?
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I was having the same problem, especially in cshtml pages. I found this page: https://devblogs.microsoft.com/aspnet/visual-studio-11-beta-razor-editor-issue-workaround that suggests changing the indent option in Tools > Options > Text Editor > HTML >...