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Efficient method to generate UUID String in JAVA (UUID.randomUUID().toString() without the dashes)
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For example, Mongodb do not uses dashes in ObjectID. So removing dashes can be useful for api.
– Alexey Ryazhskikh
Mar 28 '15 at 13:28
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Setting an environment variable before a command in Bash is not working for the second command in a
In a given shell, normally I'd set a variable or variables and then run a command. Recently I learned about the concept of prepending a variable definition to a command:
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Performance surprise with “as” and nullable types
...s with nullable types, and I'm adding a section about using the "as" operator, which allows you to write:
10 Answers
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Clean up a fork and restart it from the upstream
I have forked a repository, then I made some changes and it looks like I've messed up everything.
4 Answers
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Is there documentation for the Rails column types?
I'm looking for more than the simple type listing that is found on this page :
2 Answers
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Find the last element of an array while using a foreach loop in PHP
I am writing a SQL query creator using some parameters. In Java, it's very easy to detect the last element of an array from inside the for loop by just checking the current array position with the array length.
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How can I determine the URL that a local Git repository was originally cloned from?
... from GitHub a few days ago. I've since discovered that there are several forks on GitHub, and I neglected to note which one I took originally. How can I determine which of those forks I pulled?
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Bin size in Matplotlib (Histogram)
...(data, bins=range(min(data), max(data) + binwidth, binwidth))
Added to original answer
The above line works for data filled with integers only. As macrocosme points out, for floats you can use:
import numpy as np
plt.hist(data, bins=np.arange(min(data), max(data) + binwidth, binwidth))
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How to bind 'touchstart' and 'click' events but not respond to both?
I'm working on a mobile web site that has to work on a variety of devices. The one's giving me a headache at the moment are BlackBerry.
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How to use @Nullable and @Nonnull annotations more effectively?
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Short answer: I guess these annotations are only useful for your IDE to warn you of potentially null pointer errors.
As said in the "Clean Code" book, you should check your public method's parameters and also avoid checking in...