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Can I replace groups in Java regex?
...d second number with the first
String output = m.replaceFirst("number $3$1"); // number 46
}
Consider (\D+) for the second group instead of (.*). * is a greedy matcher, and will at first consume the last digit. The matcher will then have to backtrack when it realizes the final (\d) has nothi...
Creating a dictionary from a csv file?
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michaelbahr
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answered Jul 19 '11 at 0:16
NateNate
11k4...
Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
...extInt()).par
scala> timeMany(1000, intParList.reduce(_ + _))
Took 462.395867 milli seconds
scala> timeMany(1000, intParList.foldLeft(0)(_ + _))
Took 2589.363031 milli seconds
reduce vs fold
Now this is where it gets a little closer to the FP / mathematical roots, and a little trickier to...
How to get Vim to highlight non-ascii characters?
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edited May 15 '15 at 12:53
answered Jun 7 '13 at 15:17
Mic...
How do I test a private function or a class that has private methods, fields or inner classes?
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357
Useful if you don't know the API perhaps, but if you are having to test private methods in this manner there is something up with your des...
What is the usefulness of `enable_shared_from_this`?
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370
It enables you to get a valid shared_ptr instance to this, when all you have is this. Without ...
How do I revert a Git repository to a previous commit?
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10030
This depends a lot on what you mean by "revert".
Temporarily switch to a different commit
If yo...
Debugging sqlite database on the device
...r (preferably a hex-viewer) and check whether it starts with SQLite format 3 string. Also make sure you have a correct sqlite version (i.e. you're not trying to open sqlite3 database with sqlite2 executable). And you may also try other SQLite clients (for example SQLiteStudio). Hope it helps.
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Passing by reference in C
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318
Because you're passing the value of the pointer to the method and then dereferencing it to get...
Quit and restart a clean R session from within R?
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edited Feb 12 '16 at 16:38
answered Sep 19 '14 at 13:12
m...