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Swapping column values in MySQL
...work:
UPDATE swap_test s1, swap_test s2 SET s1.x=s1.y, s1.y=s2.x WHERE s1.id=s2.id;
Essentially, the 1st table is the one getting updated and the 2nd one is used to pull the old data from.
Note that this approach requires a primary key to be present.
This is my test schema:
CREATE TABLE `swap_t...
Calling a function within a Class method?
... public function newTest(){
$this->str .= 'function "newTest" called, ';
return $this;
}
public function bigTest(){
return $this->str . ' function "bigTest" called,';
}
public function smallTest(){
return $this->str . ' function "smallTest...
Aligning a float:left div to center?
...
you may need to add vertical-align:middle while using display:inline-block.
– ibsenv
May 24 '15 at 10:59
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const vs constexpr on variables
...constexpr: ie, would constexpr int foo(S) be executed at compile-time if I call foo(s0) ?
– Matthieu M.
Nov 12 '12 at 16:07
4
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How to specify function types for void (not Void) methods in Java8?
... @OrangeDog This is not totally true. In the comments to Runnable and Callable interfaces it's written that they are supposed to be used in conjunction with threads. The annoying consequence of that is that some static analysis tools (like Sonar) will complain if you call run() method directly....
Virtual/pure virtual explained
...e level at which it was created. Therefore if one method of the base class calls a virtual method, the version defined in the derived class will be used instead of the version defined in the base class.
This is in contrast to non-virtual functions, which can still be overridden in a derived class,...
What does “@private” mean in Objective-C?
... to clarify, methods are always public in Objective-C. There are ways of "hiding" method declarations, though—see this question for more information.
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How to send POST request in JSON using HTTPClient in Android?
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@JJD you are calling abstract method execute() and it is failed of course
– Konstantin Konopko
Jul 10 '14 at 11:57
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Directive isolate scope with ng-repeat scope in AngularJS
...sed into ngRepeat for use on your directive's attributes do use a prototypically-inherited scope
the reason your directive doesn't work has nothing to do with the isolate scope
Here's an example of the same code but with the directive removed:
<li ng-repeat="name in names"
ng-class="{ acti...
Javascript/jQuery: Set Values (Selection) in a multiple Select
...lue='" + e + "']").prop("selected", true);
});
Working Example http://jsfiddle.net/McddQ/1/
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