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How to gracefully handle the SIGKILL signal in Java
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It is impossible for any program, in any language, to handle a SIGKILL. This is so it is always possible to terminate a program, even if the program is buggy or malicious. But SIGKILL is not the only means for terminating a program. The other is to use a SIGTERM. Programs ca...
Best way to get child nodes
I was wondering, JavaScript offers a variety of methods to get the first child element from any element, but which is the best? By best, I mean: most cross-browser compatible, fastest, most comprehensive and predictable when it comes to behaviour. A list of methods/properties I use as aliases:
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Sorting a list using Lambda/Linq to objects
I have the name of the "sort by property" in a string. I will need to use Lambda/Linq to sort the list of objects.
12 Answe...
How to check if activity is in foreground or in visible background?
...reen on a timer. My problem is that before I finish() my activity I need to check that the next activity has started because a system dialogue box pops-up and I only want to finish() ; once the user has selected an option from the dialogue box?
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How do I clear/delete the current line in terminal?
...l and typing in a line of text for a command, is there a hotkey or any way to clear/delete that line?
14 Answers
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Why does visual studio 2012 not find my tests?
I have some tests that use the built in Microsoft.VisualStudio.TestTools.UnitTesting , but can not get them to run.
49 Ans...
WebAPI Multiple Put/Post parameters
I am trying to post multiple parameters on a WebAPI controller. One param is from the URL, and the other from the body. Here is the url:
/offers/40D5E19D-0CD5-4FBD-92F8-43FDBB475333/prices/
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Is returning null bad design? [closed]
...hecking for a returned null value from methods is bad design. I would like to hear some reasons for this.
24 Answers
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What does the construct x = x || y mean?
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This kind of shorthand trick with boolean expressions is common in Perl too. With the expression:
a OR b
it evaluates to true if either a or b is true. So if a is true you don't need to check b at all. This is called short-circuit boolean evaluation so:
var title = title || "Error";
basical...
How to add parameters to a HTTP GET request in Android?
I have a HTTP GET request that I am attempting to send. I tried adding the parameters to this request by first creating a BasicHttpParams object and adding the parameters to that object, then calling setParams( basicHttpParms ) on my HttpGet object. This method fails. But if I manually add my ...