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PostgreSQL - fetch the row which has the Max value for a column
I'm dealing with a Postgres table (called "lives") that contains records with columns for time_stamp, usr_id, transaction_id, and lives_remaining. I need a query that will give me the most recent lives_remaining total for each usr_id
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How to add a border just on the top side of a UIView
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Best way to implement request throttling in ASP.NET MVC?
We're experimenting with various ways to throttle user actions in a given time period :
3 Answers
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Python, compute list difference
In Python, what is the best way to compute the difference between two lists?
14 Answers
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How to plot two columns of a pandas data frame using points?
I have a pandas data frame and would like to plot values from one column versus the values from another column. Fortunately, there is plot method associated with the data-frames that seems to do what I need:
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Does Python have an ordered set?
Python has an ordered dictionary . What about an ordered set?
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What is reflection and why is it useful?
What is reflection, and why is it useful?
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Importing data from a JSON file into R
...N objects with string fields, objects, and arrays. The RJSON Package isn't very clear on how to deal with this http://cran.r-project.org/web/packages/rjson/rjson.pdf .
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How does this milw0rm heap spraying exploit work?
I usually do not have difficulty to read JavaScript code but for this one I can’t figure out the logic. The code is from an exploit that has been published 4 days ago. You can find it at milw0rm .
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