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Utility classes are evil? [closed]
...d object-oriented design, most classes should represent a single thing and all of its attributes and operations. If you are operating on a thing, that method should probably be a member of that thing.
However, there are times when you can use utility classes to group a number of methods together ...
source of historical stock data [closed]
I'm trying to make a stock market simulator (perhaps eventually growing into a predicting AI), but I'm having trouble finding data to use. I'm looking for a (hopefully free) source of historical stock market data.
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Keep only first n characters in a string?
Is there a way in JavaScript to remove the end of a string?
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How can I convert ereg expressions to preg in PHP?
...pha-numeric, a backslash or a whitespace character. The most used are generally ~, / and #.
You can also use matching brackets:
preg_match('[^hello]', $str);
preg_match('(^hello)', $str);
preg_match('{^hello}', $str);
// etc
If your delimiter is found in the regular expression, you have to escap...
How do I do a HTTP GET in Java? [duplicate]
... cletus's answer (using Apache HttpClient) is that HttpClient can automatically handle redirects and proxy authentication for you. The standard Java API classes that you use here don't do that for you. On the other hand, using the standard API classes has the advantage that you don't need to include...
Numpy: Divide each row by a vector element
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RuntimeWarning: invalid value encountered in divide
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MySQL Update Inner Join tables query
I have no idea what the problem is. Using MySQL 5.0 I get a compile error when attempting to run the following MySQL update query:
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Scala constructor overload?
How do you provide overloaded constructors in Scala?
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