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Create numpy matrix filled with NaNs
...re you can assign values to whole slices at the time, the code's intention is very clear.
Note that ndarray.fill performs its operation in-place, so numpy.empty((3,3,)).fill(numpy.nan) will instead return None.
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if, elif, else statement issues in Bash
I can't seem to work out what the issue with the following if statement is in regards to the elif and then . Keep in mind the printf is still under development I just haven't been able to test it yet in the statement so is more than likely wrong.
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Disable browser's back button
How to disable browser's BACK Button (across browsers)?
20 Answers
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Best way to merge two maps and sum the values of same key?
...ttle more detail, as per user482745's request.
Mathematically a semigroup is just a set of values, together with an operator that takes two values from that set, and produces another value from that set. So integers under addition are a semigroup, for example - the + operator combines two ints to ...
What is the Sign Off feature in Git for?
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Sign-off is a requirement for getting patches into the Linux kernel and a few other projects, but most projects don't actually use it.
It was introduced in the wake of the SCO lawsuit, (and other accusations of copyright infringement...
Run JavaScript code on window close or page refresh?
Is there a way to run a final JavaScript code when a user closes a browser window or refreshes the page?
8 Answers
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How to implement Rate It feature in Android App
I am developing an Android App. In which everything is working right. My app is ready to launch. But there I need to implement one more feature. I need to display a popup which contains
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Java Runtime.getRuntime(): getting output from executing a command line program
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Here is the way to go:
Runtime rt = Runtime.getRuntime();
String[] commands = {"system.exe", "-get t"};
Process proc = rt.exec(commands);
BufferedReader stdInput = new BufferedReader(new
InputStreamReader(proc.getInputStre...
What are “named tuples” in Python?
...e immutable. They were added in Python 2.6 and Python 3.0, although there is a recipe for implementation in Python 2.4.
For example, it is common to represent a point as a tuple (x, y). This leads to code like the following:
pt1 = (1.0, 5.0)
pt2 = (2.5, 1.5)
from math import sqrt
line_length = ...
Conversion failed when converting date and/or time from character string while inserting datetime
...se settings might work some times - and sometimes not.
The way to solve this is to use the (slightly adapted) ISO-8601 date format that is supported by SQL Server - this format works always - regardless of your SQL Server language and dateformat settings.
The ISO-8601 format is supported by SQL Se...