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When to use IList and when to use List
...t is the concrete type but I still don't know when to use each one. What I'm doing now is if I don't need the Sort or FindAll methods I use the interface. Am I right? Is there a better way to decide when to use the interface or the concrete type?
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iOS 6: How do I restrict some views to portrait and allow others to rotate?
... the last view should be allowed to rotate to landscape. When returning from the fourth view to the third and the fourth view was in landscape orientation I want everything to rotate back to portrait.
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How to install both Python 2.x and Python 3.x in Windows
I do most of my programming in Python 3.x on Windows 7, but now I need to use the Python Imaging Library (PIL), ImageMagick, and wxPython, all of which require Python 2.x.
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What is the fastest way to compare two sets in Java?
I am trying to optimize a piece of code which compares elements of list.
9 Answers
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How to detect a Christmas Tree? [closed]
Which image processing techniques could be used to implement an application that detects the Christmas trees displayed in the following images?
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How to improve performance of ngRepeat over a huge dataset (angular.js)?
...a huge dataset of several thousand rows with around 10 fields each, about 2MBs of data. I need to display it in the browser. Most straightforward approach (fetch data, put it into $scope , let ng-repeat="" do its job) works fine, but it freezes the browser for about half of a minute when it start...
How to prevent ifelse() from turning Date objects into numeric objects
I am using the function ifelse() to manipulate a date vector. I expected the result to be of class Date , and was surprised to get a numeric vector instead. Here is an example:
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Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant f
I'm trying to link a UILabel with an IBOutlet created in my class.
71 Answers
71
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What is the difference between buffer and cache memory in Linux?
To me it's not clear what's the difference between the two Linux memory concepts : buffer and cache . I've read through this post and it seems to me that the difference between them is the expiration policy:
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Delete last commit in bitbucket
I made a mistake and I don't know how to delete my latest push in the repository. I pull the latest updates of the app but it has conflicts and I push it to repository.
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