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Checking images for similarity with OpenCV
...ethods. Proposed decades ago as a means to find picture simmilarities. The idea is that a forest will have a lot of green, and a human face a lot of pink, or whatever. So, if you compare two pictures with forests, you'll get some simmilarity between histograms, because you have a lot of green in bot...
How do I iterate over an NSArray?
... most of the method call overhead.) Premature optimization is never a good idea — it results in messier code to solve a problem that isn't your bottleneck anyway.
When using -objectEnumerator, you very easily change to another enumerable collection (like an NSSet, keys in an NSDictionary, etc.), ...
What are the differences between Abstract Factory and Factory design patterns?
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Because nobody want to invest in ideas.
– jgauffin
Feb 28 '16 at 8:09
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Hook up Raspberry Pi via Ethernet to laptop without router? [closed]
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It's a solution for Ubuntu (the idea also works for Windows or Mac) I just tried today and it works like a charm.
Material
a cross-over Ethernet cable (the name is fancy but it's just a normal Ethernet cable)
a laptop (ubuntu)
a Raspberry Pi (I have the...
Set every cell in matrix to 0 if that row or column contains a 0
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So my idea is to use the values in the last row/column as a flag to indicate whether all of the values in the corresponding column/row are 1s.
Using a Zig Zag scan through the entire matrix EXCEPT the final row/column. At each ele...
How can I handle time zones in my webapp?
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+1 This is a very interesting idea because I know that the user entered an event at 9:00 in Sidney, so when the same user searches for a time (without explicit time zone), I should assume he means "where I was at that time"
– Aaron D...
What are the best practices for JavaScript error handling?
...uestion, but suggesting to randomly ignore some errors is one of the worst ideas I've ever heard.
– jbabey
Feb 1 '13 at 14:00
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R and version control for the solo data analyst
...ed with version control for data analysis with R (e.g., examples, workflow ideas, software, links to guides)?
Keep files that generate data or reports under version control, be selective. If you are using something like Sweave, store your .Rnw files and not the .tex files that get produced from t...
How to use concerns in Rails 4
...cept. It has to do with code reuse as in the example below. Basically, the idea is to extract common and / or context specific chunks of code in order to clean up the models and avoid them getting too fat and messy.
As an example, I'll put one well known pattern, the taggable pattern:
# app/models...
How to get the ThreadPoolExecutor to increase threads to max before queueing?
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As much as I don't like the idea of breaking the contract of Queue in order to accomplish this, you're certainly not alone in your idea: groovy-programming.com/post/26923146865
– bstempi
Oct 23 '13 at 13:26
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