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Should I use a data.frame or a matrix?

... Part of the answer is contained already in your question: You use data frames if columns (variables) can be expected to be of different types (numeric/character/logical etc.). Matrices are for data of the same type. Consequently, the choice matrix/da...
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Need to reset git branch to origin version

I was accidentally working on a branch I shouldn't have been for a while, so I branched off of it giving it the appropriate name. Now I want to overwrite the branch I shouldn't have been on to the version from origin (github). Is there an easy way to do this? I tried deleting the branch and then ...
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When is an interface with a default method initialized?

While searching through the Java Language Specification to answer this question , I learned that 4 Answers ...
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Typical AngularJS workflow and project structure (with Python Flask)

...or Backbone. Anyway what is the workflow like? Do people start with developing a client-side application in AngularJS and then hooking up the back-end to it? ...
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How to detect my browser version and operating system using JavaScript?

I have tried using the code below but it only display results in Chrome and Mozilla not working in IE6. 10 Answers ...
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Why doesn't C# support the return of references?

...eferences, but C# doesn't. Is there a special reason? Why I can't do something like: 4 Answers ...
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git cherry-pick says “…38c74d is a merge but no -m option was given”

I made some changes in my master branch and want to bring those upstream. when I cherry-pick the following commits however I get stuck on fd9f578 where git says: ...
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What is the “FS”/“GS” register intended for?

So I know what the following registers and their uses are supposed to be: 5 Answers 5 ...
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How do I merge a git tag onto a branch

I'm trying to find the syntax for merging a tagged commit onto another branch. I'm guessing that it's straight forward but my feeble search attempts aren't finding it. ...
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stringstream, string, and char* conversion confusion

My question can be boiled down to, where does the string returned from stringstream.str().c_str() live in memory, and why can't it be assigned to a const char* ? ...