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Does name length impact performance in Redis?
I like to use verbose names in Redis, for instance set-allBooksBelongToUser:$userId .
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Git commit date
Other than parsing git log for the date string, is there a Git native way to report the date of a certain commit?
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Javascript Array Concat not working. Why?
So I've created this jqueryui widget. Its creates a div that I can stream errors into. The widget code looks like this:
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Difference between as.POSIXct/as.POSIXlt and strptime for converting character vectors to POSIXct/PO
I have followed a number of questions here that asks about how to convert character vectors to datetime classes. I often see 2 methods, the strptime and the as.POSIXct/as.POSIXlt methods. I looked at the 2 functions but am unclear what the difference is.
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What are the advantages of NumPy over regular Python lists?
What are the advantages of NumPy over regular Python lists?
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Instance variables vs. class variables in Python
I have Python classes, of which I need only one instance at runtime, so it would be sufficient to have the attributes only once per class and not per instance. If there would be more than one instance (which won't happen), all instance should have the same configuration. I wonder which of the follow...
Android: What's the difference between Activity.runOnUiThread and View.post?
What's the difference between Activity.runOnUiThread and View.post , could someone, please, explain?
4 Answers
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Validate uniqueness of multiple columns
Is there a rails-way way to validate that an actual record is unique and not just a column? For example, a friendship model / table should not be able to have multiple identical records like:
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How to resize the AVD emulator (in Eclipse)?
I'm writing my first Android app for a small business that has some Droid phones. I set up an AVD for the phone with the right resolution: 854 pixels high.
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What does the arrow operator, '->', do in Java?
While hunting through some code I came across the arrow operator, what exactly does it do? I thought Java did not have an arrow operator.
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