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How to check 'undefined' value in jQuery
How we can add a check for an undefined variable, like:
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Windows git “warning: LF will be replaced by CRLF”, is that warning tail backward?
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How can I select the first day of a month in SQL?
I just need to select the first day of the month of a given datetime variable.
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A simple explanation of Naive Bayes Classification
I am finding it hard to understand the process of Naive Bayes, and I was wondering if someone could explain it with a simple step by step process in English. I understand it takes comparisons by times occurred as a probability, but I have no idea how the training data is related to the actual datase...
Regex for string contains?
What is the regex for simply checking if a string contains a certain word (e.g. 'Test')? I've done some googling but can't get a straight example of such a regex. This is for a build script but has no bearing to any particular programming language.
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Does the default constructor initialize built-in types?
Does the default constructor (created by the compiler) initialize built-in-types?
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Rails 3: Get Random Record
So, I've found several examples for finding a random record in Rails 2 -- the preferred method seems to be:
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How do I send a POST request as a JSON?
I want to send a POST request, but one of the fields should be a list of numbers. How can I do that ? (JSON?)
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Footnotes for tables in LaTeX
When I do \footnote{} for a value in a table, the footnote doesn't show up. How do I get it to show up? Also, is it possible to get it to show up at the bottom of the table rather than the bottom of the page?
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Python: Why is functools.partial necessary?
Partial application is cool. What functionality does functools.partial offer that you can't get through lambdas?
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