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What is “2's Complement”?
... is a way of writing numbers using just 0 and 1 following the same general idea, but replacing those 10s above with 2s. Then in binary, 1111is a way of writing 1 × 23 + 1 × 22 + 1 × 21 + 1 × 20and if you work it out, that turns out to equal 15 (base 10). That's because it is 8+4+2+1 =...
Using Node.js only vs. using Node.js with Apache/Nginx
... have ever read against serving static files with Node revolves around the idea of using what you know best or using what is perceived as better-tested / more stable. These are very valid reasons practically speaking, but have little purely technical relevance.
Unless you find a feature that is pos...
How to use Git properly with Xcode?
...to XML).” Actually, it's an OpenStep-formatted property list. Same basic ideas as JSON, but the syntax differs in a few places.
– Peter Hosey
Apr 28 '10 at 20:22
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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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