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How create table only using tag and Css
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How to write to an existing excel file without overwriting data (using pandas)?
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NSString property: copy or retain?
...e caused some confusion (see robnapier.net/blog/implementing-nscopying-439#comment-1312). You are absolutely correct about NSString, but I believe you've made the point a bit too general. The reason NSString should be copied is that it has a common mutable subclass (NSMutableString). For classes tha...
Commenting multiple lines in DOS batch file
...To test this batch file I need to execute some lines only and want to hide/comment out remaining.
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What is a “batch”, and why is GO used?
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GO is not properly a TSQL command.
Instead it's a command to the specific client program which connects to an SQL server (Sybase or Microsoft's - not sure about what Oracle does), signalling to the client program that the set of commands that were inp...
JavaScript: client-side vs. server-side validation
...h engine that re-submitted the user's search to many partner airlines, bus companies, etc, by sending POST requests as if the user had filled each company's search form, then gathered and sorted all the results. Those companies' form JS was never executed, and it was crucial for us that they provide...
What's wrong with using == to compare floats in Java?
According to this java.sun page == is the equality comparison operator for floating point numbers in Java.
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How to find the kth largest element in an unsorted array of length n in O(n)?
...uickselect) taking O(n) average time, O(n^2) worst case time, and a pretty complicated non-randomized algorithm (called introselect) taking O(n) worst case time. There's some info on Wikipedia, but it's not very good.
Everything you need is in these powerpoint slides. Just to extract the basic algo...
Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
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There are two competing concerns: with less training data, your parameter estimates have greater variance. With less testing data, your performance statistic will have greater variance. Broadly speaking you should be concerned with dividin...