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JOIN queries vs multiple queries
Are JOIN queries faster than several queries? (You run your main query, and then you run many other SELECTs based on the results from your main query)
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Convert SVG image to PNG with PHP
I'm working on a web project that involves a dynamically generated map of the US coloring different states based on a set of data.
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How to convert an array of strings to an array of floats in numpy?
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4 Answers
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How to check if a Ruby object is a Boolean
I can't seem to check if an object is a boolean easily. Is there something like this in Ruby?
9 Answers
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What is the JavaScript >>> operator and how do you use it?
I was looking at code from Mozilla that add a filter method to Array and it had a line of code that confused me.
7 Answers
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How do I rename a Git repository?
git mv renames a file or directory in a repository. How do I rename the Git repository itself?
18 Answers
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What are the Dangers of Method Swizzling in Objective-C?
I have heard people state that method swizzling is a dangerous practice. Even the name swizzling suggests that it is a bit of a cheat.
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When should I use C++14 automatic return type deduction?
With GCC 4.8.0 released, we have a compiler that supports automatic return type deduction, part of C++14. With -std=c++1y , I can do this:
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How can I trim beginning and ending double quotes from a string?
I would like to trim a beginning and ending double quote (") from a string.
How can I achieve that in Java? Thanks!
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What's the best way to share data between activities?
I have one activity which is the main activity used throughout the app and it has a number of variables. I have two other activities which I would like to be able to use the data from the first activity.
Now I know I can do something like this:
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