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Error installing mysql2: Failed to build gem native extension
I am having some problems when trying to install mysql2 gem for Rails. When I try to install it by running bundle install or gem install mysql2 it gives me the following error:
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How do I measure the execution time of JavaScript code with callbacks?
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How to lay out Views in RelativeLayout programmatically?
I'm trying to achieve the following programmatically (rather than declaratively via XML):
9 Answers
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Can I use break to exit multiple nested 'for' loops?
Is it possible to use the break function to exit several nested for loops?
20 Answers
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Rotating and spacing axis labels in ggplot2
I have a plot where the x-axis is a factor whose labels are long. While probably not an ideal visualization, for now I'd like to simply rotate these labels to be vertical. I've figured this part out with the code below, but as you can see, the labels aren't totally visible.
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Expert R users, what's in your .Rprofile? [closed]
I have always found startup profile files of other people both useful and instructive about the language. Moreover, while I have some customization for Bash and Vim , I have nothing for R.
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Detect when an image fails to load in Javascript
Is there a way to determine if a image path leads to an actual image, Ie, detect when an image fails to load in Javascript.
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How to check if a column exists in a SQL Server table?
I need to add a specific column if it does not exist. I have something like the following, but it always returns false:
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Is there a way to override class variables in Java?
The function doIt will print "dad". Is there a way to make it print "son"?
17 Answers
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How to spyOn a value property (rather than a method) with Jasmine
... is good to change a method's behavior, but is there any way to change a value property (rather than a method) for an object? the code could be like below:
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