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How to extract numbers from a string and get an array of ints?
...ly an English sentence with an unspecified number of numbers) and I'd like to extract all the numbers into an array of integers. I was wondering whether there was a quick solution with regular expressions?
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Scanning Java annotations at runtime [closed]
...classpath from a base package. It then applies exclude and include filters to the resulting classes to find candidates.
ClassPathScanningCandidateComponentProvider scanner =
new ClassPathScanningCandidateComponentProvider(<DO_YOU_WANT_TO_USE_DEFALT_FILTER>);
scanner.addIncludeFilter(new An...
What is the equivalent of MATLAB's repmat in NumPy
I would like to execute the equivalent of the following MATLAB code using NumPy: repmat([1; 1], [1 1 1]) . How would I accomplish this?
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How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?
Is there a way to call a block with a primitive parameter after a delay, like using performSelector:withObject:afterDelay: but with an argument like int / double / float ?
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how to change default python version?
... looking for is You should not change this.
You could, however, make a custom alias in your shell. The way you do so depends on the shell, but perhaps you could do alias py=python3
If you are confused about how to start the latest version of python, it is at least the case on Linux that python3 le...
How to save a data.frame in R?
... made a data.frame in R that is not very big, but it takes quite some time to build. I would to save it as a file, which I can than again open in R?
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How to get a complete list of ticker symbols from Yahoo Finance? [closed]
...nce-managed/ that will get you there. Unfortunately there is no direct way to download the ticker list but the following creates the list by iterating through the alphabetical groups:
AlphabeticIDIndexDownload dl1 = new AlphabeticIDIndexDownload();
dl1.Settings.TopIndex = null;
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Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sie
.... You can also use launchctl load ~/Library/LaunchAgents/environment.plist to launch it immediately.
[Edit]
The same solution works in El Capitan too.
Xcode 7.0+ doesn't evaluate environment variables by default. The old behaviour can be enabled with this command:
defaults write com.apple.dt.Xco...
How to check a string for specific characters?
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I like that last version using any(). Is there a way to refer to the found character c in a pythonic style (it seems to be scoped inside of any() only), or would I need to make the search for several characters more explicit?
– Jens
Oct 7 ...
Is there a standard sign function (signum, sgn) in C/C++?
...ive numbers.
http://en.wikipedia.org/wiki/Sign_function
It's easy enough to write my own, but it seems like something that ought to be in a standard library somewhere.
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