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How Do You Clear The IRB Console?
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John TopleyJohn Topley
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Get UIScrollView to scroll to the top
How do I make a UIScrollView scroll to the top?
14 Answers
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How do you loop through each line in a text file using a windows batch file?
I would like to know how to loop through each line in a text file using a Windows batch file and process each line of text in succession.
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How to get package name from anywhere?
... and View.getContext() , through which I can actually call Context.getPackageName() to retrieve the package name of an application.
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User recognition without cookies or local storage
...ng Random Data. You can't store the user's identity reliably because:
Cookies Can be deleted
IP address Can change
Browser Can Change
Browser Cache may be deleted
A Java Applet or Com Object would have been an easy solution using a hash of hardware information, but these days people are so secu...
PostgreSQL - fetch the row which has the Max value for a column
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On a table with 158k pseudo-random rows (usr_id uniformly distributed between 0 and 10k, trans_id uniformly distributed between 0 and 30),
By query cost, below, I am referring to Postgres' cost based optimizer's cost estimate (with Postgres' d...
Calculating distance between two points, using latitude longitude?
...ct results but the small errors add up if you are processing say a GPS track. Here is an implementation of the Haversine method in Java which also takes into account height differences between two points.
/**
* Calculate distance between two points in latitude and longitude taking
* into account ...
In Vim is there a way to delete without putting text in the register?
Using Vim I often want to replace a block of code with a block that I just yanked.
25 Answers
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Data structure for loaded dice?
Suppose that I have an n-sided loaded die where each side k has some probability p k of coming up when I roll it. I'm curious if there is good algorithm for storing this information statically (i.e. for a fixed set of probabilities) so that I can efficiently simulate a random roll of the die.
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in Ipython notebook / Jupyter, Pandas is not displaying the graph I try to plot
I am trying to plot some data using pandas in Ipython Notebook, and while it gives me the object, it doesn't actually plot the graph itself. So it looks like this:
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