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How can I calculate an md5 checksum of a directory?
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Note that the same checksum will be generated if a file gets renamed. So this doesn't truly fit a "checksum which will uniquely identify the directory as a whole" if you consider file layout part of the signature.
– Valentin Milea
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How to add pandas data to an existing csv file?
I want to know if it is possible to use the pandas to_csv() function to add a dataframe to an existing csv file. The csv file has the same structure as the loaded data.
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Return 0 if field is null in MySQL
In MySQL, is there a way to set the "total" fields to zero if they are NULL?
5 Answers
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Recommended way to stop a Gradle build
...ered something invalid, or GradleScriptException for more general errors.
If you want to stop the current task or action, and move on to the next, you can also throw a StopActionException
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Disable autocomplete via CSS
Is it possible to use CSS to disable autocomplete on a form element (specifically a textfield)?
12 Answers
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How to check if a string contains only digits in Java [duplicate]
...ng class there is a method called matches, how to use this method to check if my string is having only digits using regular expression. I tried with below examples, but both of them returned me false as result.
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Java 8 forEach with index [duplicate]
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Would this work in case you want specific order for params (e.g. sorted)?
– Tomer Cagan
Jun 4 '16 at 11:49
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Best way to detect that HTML5 is not supported
... was for detection when it's not supported, I recommend using it like so:
if (!isCanvasSupported()){ ...
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CSS: 100% width or height while keeping aspect ratio?
...e height (or vice versa), but I still can't constrain the image into a specific position, either being too wide or too tall, respectively.
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What's the simplest way to test whether a number is a power of 2 in C++?
... 0 is best. However, note that it will incorrectly return true for n=0, so if that is possible, you will want to check for it explicitly.
http://www.graphics.stanford.edu/~seander/bithacks.html has a large collection of clever bit-twiddling algorithms, including this one.
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