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Should a retrieval method return 'null' or throw an exception when it can't produce the return value

...pens if the object cannot be returned. With a Try method, you immediately know what to do. – OregonGhost Oct 6 '08 at 20:52 ...
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Android Writing Logs to text File

... and Android logging Log4j is generic java logging implementation and is now a project of Apache software foundation. It is not Android specific and so has some incompatibilities with Android. SL4J is not a logging implementation, It is an abstraction layer. It helps avoid a situations like, each...
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Is there a better Windows Console Window? [closed]

...ing often enough to make it feel exciting. If you've not tried this, do it now. I have no hesitation in recommending it as the best console emulator on Windows. – Charles Roper Jun 7 '12 at 13:08 ...
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virtualenv --no-site-packages and pip still finding global packages?

... I know this is a really (really) old post, but I have searched everywhere, including asking some of my own questions on SO, and I cannot figure out how to get --no-site-packages to work. I'm getting close to just wiping ubuntu a...
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What is the fastest or most elegant way to compute a set difference using Javascript arrays?

... if don't know if this is most effective, but perhaps the shortest A = [1, 2, 3, 4]; B = [1, 3, 4, 7]; diff = A.filter(function(x) { return B.indexOf(x) < 0 }) console.log(diff); Updated to ES6: A = [1, 2, 3, 4]; B = [1, 3, 4, ...
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What exactly is Heroku?

...arted learning Ruby on rails and I was wondering what Heroku really is? I know that its a cloud that helps us to avoid using servers? When do we actually use it? ...
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How to show multiline text in a table cell

... I'm in a situation now where white-space: pre; is being ignored when applied in a <td> tag. Using <pre></pre> to wrap our content works fine, but due to the use of this table (exporting to excel), large #s of columns and rows ...
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Aligning text and image on UIButton with imageEdgeInsets and titleEdgeInsets

... self.titleEdgeInsets = UIEdgeInsetsMake(0, spacing, 0, 0); } @end So now all I have to do is: [button centerButtonAndImageWithSpacing:10]; And I get what I need every time. No more messing with the edge insets manually. EDIT: Swapping Image and Text In response to @Javal in comments Usi...
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git visual diff between branches

...with gitk. > gitk branch1 branch2 First click on the tip of branch1. Now right-click on the tip of branch2 and select Diff this->selected. share | improve this answer | ...
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What are “Groovy” and “Grails” and what kinds of applications are built using them?

Nowadays I hear a lot about "Groovy on Grails" and I want to know more about it: 4 Answers ...