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What's the difference between utf8_general_ci and utf8_unicode_ci?
...e UTF-8 character encoding. The differences are in how text is sorted and compared.
Note: In MySQL you have to use utf8mb4 rather than utf8. Confusingly, utf8 is a flawed UTF-8 implementation from early MySQL versions which remains only for backward compatibility. The fixed version was given the na...
What are the effects of exceptions on performance in Java?
...dor), who says they also use the fast implementation? The fast one is more complicated than the slow one and not easily possible on all systems. You want to stay portable? Then don't rely on exceptions being fast.
It also makes a big difference what you do within a try block. If you open a try bloc...
Single Page Application: advantages and disadvantages [closed]
...the execution. With HTML5 pushState() you can eliminate the #hash and use completely classic URLs which can resolve on the server on the first request and then load via ajax on subsequent requests.
2. With SPA we don't need to use extra queries to the server to download pages.
The number of pages...
How to fix “Headers already sent” error in PHP
...p
PHP actually eats up a single linebreak after close tags. But it won't
compensate multiple newlines or tabs or spaces shifted into such gaps.
UTF-8 BOM
Linebreaks and spaces alone can be a problem. But there are also "invisible"
character sequences which can cause this. Most famously the
UTF-8 ...
Why are Subjects not recommended in .NET Reactive Extensions?
...he various introduction resources I've found (mainly http://www.introtorx.com )
5 Answers
...
How do you use version control with Access development?
...re in german, but you can easily change that.)
EDIT:
To summarize various comments below:
Our Project assumes an .adp-file. In order to get this work with .mdb/.accdb, you have to change OpenAccessProject() to OpenCurrentDatabase(). (Updated to use OpenAccessProject() if it sees a .adp extension, e...
Can hash tables really be O(1)?
It seems to be common knowledge that hash tables can achieve O(1), but that has never made sense to me. Can someone please explain it? Here are two situations that come to mind:
...
Pass props to parent component in React.js
...at prop?
Better implementation
Child: it really does not have to be more complicated than that.
var Child = React.createClass({
render: function () {
return <button onClick={this.props.onClick}>{this.props.text}</button>;
},
});
Parent with single child: using the value it p...
JavaScript closures vs. anonymous functions
...ble is bound.
If F is referenced from outside that parent scope, then it becomes a closure for that free variable.
That free variable is called an upvalue of the closure F.
Now let's use this to figure out who uses closures and who doesn't (for the sake of explanation I have named the functions):...
What do 'real', 'user' and 'sys' mean in the output of time(1)?
...d time the process spends blocked (for example if it is waiting for I/O to complete).
User is the amount of CPU time spent in user-mode code (outside the kernel) within the process. This is only actual CPU time used in executing the process. Other processes and time the process spends blocked do n...