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Is there a performance difference between CTE , Sub-Query, Temporary Table or Table Variable?
In this excellent SO question , differences between CTE and sub-queries were discussed.
4 Answers
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Regular expression for letters, numbers and - _
...iteral .
References
regular-expressions.info/Anchors, Character Classes and Repetition
In PHP
Here's a snippet to show how you can use this pattern:
<?php
$arr = array(
'screen123.css',
'screen-new-file.css',
'screen_new.js',
'screen new file.css'
);
foreach ($arr as $s) {
if...
AngularJS UI Router - change url without reloading state
Currently our project is using default $routeProvider , and I am using this "hack", to change url without reloading page:
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How to keep up with the latest versions of Node.js in Ubuntu? PPA? Compiling?
... could also use tools like for example nvm which can help you install node and even have multiple versions.
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How many constructor arguments is too many?
...both similar in intent, in that we slowly build up an intermediate object, and then create our target object in a single step.
An example of the fluent interface in action would be:
public class CustomerBuilder {
String surname;
String firstName;
String ssn;
public static CustomerB...
Constructor overload in TypeScript
...t allows you to declare overloads but you can only have one implementation and that implementation must have a signature that is compatible with all overloads. In your example, this can easily be done with an optional parameter as in,
interface IBox {
x : number;
y : number;
height ...
Is there a good jQuery Drag-and-drop file upload plugin? [closed]
...a look at this one: http://aquantum-demo.appspot.com/file-upload
It also handles multiple file upload!
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Characters allowed in a URL
... used within a GET without being encoded? At the moment I am using A-Z a-z and 0-9... but I am looking to find out the full list.
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Get image data url in JavaScript?
... the same domain as the page, or has the crossOrigin="anonymous" attribute and the server supports CORS. It's also not going to give you the original file, but a re-encoded version. If you need the result to be identical to the original, see Kaiido's answer.
You will need to create a canvas eleme...
What happens to a detached thread when main() exits?
Assume I'm starting a std::thread and then detach() it, so the thread continues executing even though the std::thread that once represented it, goes out of scope.
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