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Shell command to sum integers, one per line?
...ype equation to bc.
paste -s -d+ infile | bc
Alternatively, when piping from stdin,
<commands> | paste -s -d+ - | bc
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Understanding dispatch_async
...to run tasks in the background.
For instance, if I am downloading a file from the internet and I want to update the user on the progress of the download, I will run the download in the priority default queue and update the UI in the main queue asynchronously.
dispatch_async(dispatch_get_global_qu...
Why Doesn't C# Allow Static Methods to Implement an Interface?
...ld give Animal a const property, which would still allow it to be accessed from a static context, and return that value in the implementation.
public class Animal: IListItem {
/* Can be tough to come up with a different, yet meaningful name!
* A different casing convention, like Java has, ...
Java8 Lambdas vs Anonymous classes
...xpressions is that AICs introduce a new scope. That is, names are resolved from the AIC's superclasses and interfaces and can shadow names that occur in the lexically enclosing environment. For lambdas, all names are resolved lexically.
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Error: 10 $digest() iterations reached. Aborting! with dynamic sortby predicate
...rc in my controller to be called in an endless loop. If I remove the ng-if from this line, then the problem is solved.
<iframe ng-if="chat.src" id='chat' name='chat' class='chat' ng-src="{{myTrustSrc(chat.src)}}"></iframe>
The function is only called a few times when ng-if isn't used....
Do spurious wakeups in Java actually happen?
...nd friends could not return EINTR, but return zero if spuriously woken up? From: pubs.opengroup.org/onlinepubs/7908799/xsh/… "These functions will not return an error code of [EINTR]."
– gub
Aug 11 '14 at 17:57
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Is it possible to use jQuery .on and hover?
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That edit changed my vote from a down-vote to an up-vote, well played, Sethen, well played!
– Sean Kendle
Aug 13 '13 at 16:12
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Change the URL in the browser without loading the new page using JavaScript
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Sample code is cut and pasted from developer.mozilla.org/en/DOM/Manipulating_the_browser_history . Which actually bothers explaining what foo and bar mean in this case.
– mikemaccana
Feb 1 '11 at 11:45
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Quickest way to compare two generic lists for differences
...; to compare the objects. It works by first collecting all distinct values from the second sequence, and then streaming the results of the first, checking that they haven't been seen before.
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What is the AppDelegate for and how do I know when to use it?
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@Shivam, thanks.
From what I understand of appDelegate, is close to what an Application is in Android. The viewDidLoad, viewDidDisappear is comparable to what Android's Lifecycle. Every application has a life cycle, from launching to interrup...