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How to check if PHP array is associative or sequential?
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I think it is more useful to think of sequential arrays as a special case of associative arrays. So every array is associative, but only some are sequential. Therefore, a function isSequential() would make more sense than isAssoc(). In suc...
Converting a List to a comma separated string
... it allocates one string per element. Using a StringBuilder would be much more efficient.
– Steven Sudit
Oct 6 '09 at 23:49
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Find object by id in an array of JavaScript objects
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In C#, why is String a reference type that behaves like a value type?
...have been a value type (a struct), but the "value" would have been nothing more than a reference to the string. The .NET designers naturally decided to cut out the middleman (struct handling was inefficient in .NET 1.0, and it was natural to follow Java, in which strings were already defined as a re...
How to determine if a decimal/double is an integer?
...s-calculations. Since the question is about double values, below will be a more floating-point calculation proof answer:
Math.Abs(d % 1) <= (Double.Epsilon * 100)
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How do I change permissions for a folder and all of its subfolders and files in one step in Linux?
...range edge cases where you'd set only one or the other. See this guide for more info: nixsrv.com/llthw/ex23
– Alexandr Kurilin
Jul 26 '13 at 3:11
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g++ undefined reference to typeinfo
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What are some good resources for learning about Artificial Neural Networks? [closed]
...mple gradient descent, but this can be much slower and less effective than more nuanced methods like
Once you've got the basic ideas down you can start to experiment with different "squashing" functions in your hidden layer, adding various kinds of regularization, and various tweaks to make learni...
Why is NaN not equal to NaN? [duplicate]
...n the very post you quoted: ` Many commenters have argued that it would be more useful to preserve reflexivity of equality and trichotomy on the grounds that adopting NaN != NaN doesn’t seem to preserve any familiar axiom. I confess to having some sympathy for this viewpoint, so I thought I would ...