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How does Duff's device work?
...he article on Wikipedia on the Duff's device , and I don't get it. I am really interested, but I've read the explanation there a couple of times and I still don't get it how the Duff's device works.
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iPhone Safari Web App opens links in new window
...after adding icon to Home Screen. If the web is launched from Home Screen, all links will open in new window in Safari (and lose full screen functionality). How can I prevent it? I couldn't find any help, only the same unanswered question.
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Set “this” variable easily?
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There are two methods defined for all functions in JavaScript, call(), and apply(). The function syntax looks like:
call( /* object */, /* arguments... */ );
apply(/* object */, /* arguments[] */);
What these functions do is call the function they were inv...
Is String.Contains() faster than String.IndexOf()?
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Contains calls IndexOf:
public bool Contains(string value)
{
return (this.IndexOf(value, StringComparison.Ordinal) >= 0);
}
Which calls CompareInfo.IndexOf, which ultimately uses a CLR implementation.
If you want to see how ...
.NET WebAPI Serialization k_BackingField Nastiness
...rk with Web API.
Just leave your model as is, and Web API would serialize all the public properties for you.
Only if you want to have more control about what's included, you then decorate your class with [DataContract] and the properties to be included with [DataMember] (because both DCS and JSON...
What, exactly, is needed for “margin: 0 auto;” to work?
...ple's heads:
The element must have a width that is not auto2
Note that all of these conditions must be true of the element being centered for it to work.
1 There is one exception to this: if your fixed or absolutely positioned element has left: 0; right: 0, it will center with auto margins.
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ReactJS - Does render get called any time “setState” is called?
Does React re-render all components and sub components every time setState() is called?
7 Answers
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How do I find out which DOM element has the focus?
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Use document.activeElement, it is supported in all major browsers.
Previously, if you were trying to find out what form field has focus, you could not. To emulate detection within older browsers, add a "focus" event handler to all fields and record the last-focused field...
Chrome: timeouts/interval suspended in background tabs?
...ted) setTimeout is not very accurate but for most appliances not dramatically inaccurate. Now if I run the test in in Chrome and let it run in a background tab (so, switching to another tab and browse on there), returning to the test and inspecting te results (if the test finished) they are dramat...
jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
...m running a Maven project which is also a dynamic web project. I have used all Spring libraries in Maven. I created web.xml , but when I start my Tomcat 7 server I am getting the following message:
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