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How do I make a matrix from a list of vectors in R?
Goal: from a list of vectors of equal length, create a matrix where each vector becomes a row.
6 Answers
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Can you organize imports for an entire project in eclipse with a keystroke?
Wouldn't it be nice to just do a keystroke and have eclipse organize all imports in all java classes instead of just the one you are looking at? Is this possible? Is there a keystroke for it?
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MySql server startup error 'The server quit without updating PID file '
On Snow Leopard, starting MySQL gives the following error:
50 Answers
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Redirect to named url pattern directly from urls.py in django?
In Django, how can I do a simple redirect directly from urls.py? Naturally I am a well organized guy, favoring the DRY principle, so I would like to get the target based on it's named url pattern, rather than hard coding the url.
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How to iterate over arguments in a Bash script
I have a complex command that I'd like to make a shell/bash script of. I can write it in terms of $1 easily:
8 Answers
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C++11 reverse range-based for-loop
Is there a container adapter that would reverse the direction of iterators so I can iterate over a container in reverse with range-based for-loop?
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How to disable an Android button?
I have created a layout that contains two buttons, Next and Previous. In between the buttons I'm generating some dynamic views. So when I first launch the application I want to disable the "Previous" button since there wont be any previous views. I also want to disable the "Next" button when there a...
What's up with Java's “%n” in printf?
I'm reading Effective Java and it uses %n for the newline character everywhere. I have used \n rather successfully for newline in Java programs.
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Is the “struct hack” technically undefined behavior?
What I am asking about is the well known "last member of a struct has variable length" trick. It goes something like this:
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SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
I am trying to do the Michael Hartl tutorial. When I attempt to install rails 3.2.14 in my gemset, I get the following issue:
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