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Fastest way to replace NAs in a large data.table
...onest, this is against my Intuition of the data.table Syntax and I have no idea why this works. Can anybody enlighten me?
Accessing Session Using ASP.NET Web API
... functions read from session, and don't modify session, it might be a good idea to use IReadOnlySessionState instead of IRequiresSessionState. This ensures the session isn't locked during the processing of the API function.
– warrickh
Jun 9 '13 at 20:48
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How to fix corrupted git repository?
...istory. At this point, if you have a working history log, then it's a good idea to prune your history and reflogs of all unreachable commits and objects.
Full Restores and Re-Initialization
If your repository is still broken, then hopefully you have an uncorrupted backup or clone you can restore f...
Is there a difference between foreach and map?
...++, for example, foreach returns the operation it originally received. The idea is that the operation might have a state, and you may want that operation back to inspect how it evolved over the elements. map, too, may or may not return a value. In C++ transform (the equivalent for map here) happens ...
Return array in a function
... could return a reference to it if you want, but that's not really a great idea, since it sort of implies that you're getting something different from what you passed.
If you really do need a new instance of the collection, but want to avoid having it on the stack (and all the copying that entail...
Is it possible for git-merge to ignore line-ending differences?
...t files may not be readily usable for mechanical application.
The general idea, when it comes to git merge, is to rely on the third-party merge tool.
For instance, I have setup DiffMerge to be the tool for Git merge, setting a ruleset which allow that merge tool to ignore eol for certain type of fi...
Difference between malloc and calloc?
...t does zero-initialize the memory; this is not the primary difference! The idea of calloc is to abstact copy-on-write semantics for memory allocation. When you allocate memory with calloc it all maps to same physical page which is initialized to zero. When any of the pages of the allocated memory is...
What is the difference between square brackets and parentheses in a regex?
...nation of the use of a character class and a single metacharacter is a bad idea, by the way, since the layer of abstraction can slow down the match, but this is only an implementation detail and only applies to a few of regex implementations. JavaScript is not one, but it does make the subpattern sl...
Fragment or Support Fragment?
...ng for Android 4.x, using the fragments from the support library is a good idea. The support library has bugs fixed that are still present in older fragment implementations and is frequently updated with more bug fixes.
shar...
Design Patterns: Factory vs Factory method vs Abstract Factory
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The idea behind the ComputerFactory would be that you have a common creation interface (getScreen(); getKeyboard(); getDiskdrive(); ...), not an interface per computer type as you suggest. You can smell a design issue if you use...