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Has an event handler already been added?
...
The only way that worked for me is creating a Boolean variable that I set to true when I add the event. Then I ask: If the variable is false, I add the event.
bool alreadyAdded = false;
This variable can be global.
if(!alreadyAdded)
{
myClass.MyEvent += MyHandler;
alreadyAdded = tru...
How do I improve ASP.NET MVC application performance?
... mean i do lose performance when i e.g. have a view that displays a result set by irritating through an IList and call Render.PartialView("Row", item) for each list item? how much do i lose? or how could i measure the performance gain?
– marc.d
Feb 12 '10 at 15...
How to show a GUI message box from a bash script in linux?
...--help is not so helpful. To make this useful, you need to ensure that you set --text=My text here to make it display something...
– Stephen
Oct 26 '11 at 4:03
11
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Import package.* vs import package.SpecificType [duplicate]
...ports list small so I can tell what is going on at a glance. To do this, I set the threshold at 4 classes. Above that, Eclipse will use * for my code. I find this keeps my package imports readable, and I tend to refer to them as the first thing I do when I look at a class, to answer the question: Wh...
How to check if a string is a valid date
... where a user is located is to ask them during sign-up, and then provide a setting in their preferences to change it. Assuming you can dig it out by some clever heuristic and not bother the user for that information, is prone to failure so just ask.
This is a test using Date.parse. I'm in the U.S.:...
iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationForm
...u are displaying the modal with a UINavigationController. You then have to set the disablesAutomaticKeyboardDismissal on the navigation controller and not on the view controller. You can easily do this with categories.
File: UINavigationController+KeyboardDismiss.h
#import <Foundation/Foundatio...
How to implement an abstract class in ruby?
... backtrace remains intact, eg: err = NotImplementedError.new(message); err.set_backtrace caller() YMMV
– Anthony Navarre
May 10 '12 at 6:18
...
Check if object is a jQuery object
...this inside the constructor function to point to a new instance of jQuery, setting it's properties to those found on jQuery.prototype (aka jQuery.fn). Thus, you get a new object where instanceof jQuery is true.
1It's actually new jQuery.prototype.init(foo): the constructor logic has been offloade...
UIView bottom border?
...en your CALayer won't automatically adjust itself. You're going to have to set that up yourself. Whereas using drawRect can handle the change automatically.
– Womble
Jul 3 '15 at 4:02
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jQuery.click() vs onClick
...; http://www.quirksmode.org/js/events_advanced.html
Other methods such as setting the HTML attributes, example:
<button onclick="alert('Hello world!')">
Or DOM element properties, example:
myEl.onclick = function(event){alert('Hello world');};
are old and they can be over written eas...