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Extracting numbers from vectors of strings
...ion is an indirect way of getting to the solution. If you want to retrieve all the numbers, I recommend gregexpr:
matches <- regmatches(years, gregexpr("[[:digit:]]+", years))
as.numeric(unlist(matches))
If you have multiple matches in a string, this will get all of them. If you're only intere...
Why so red? IntelliJ seems to think every declaration/method cannot be found/resolved
...amd64. This was the problem.I have changed to default-java and no more red error.
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Make git automatically remove trailing whitespace before committing
... for git to automatically remove trailing whitespace (and other whitespace errors) from all commits as they are applied.
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Best way to create a simple python web service [closed]
...at. As of now, the Web site <webpy.org> says: 500 - Internal Server Error Otherwise, our code does not work for me: ... app = web.application(urls, globals()) AttributeError: 'module' object has no attribute 'application'
– bortzmeyer
Jan 6 '09 at ...
What is the “FS”/“GS” register intended for?
...ss of thread_local data is a happy unintended consequence of an historical error.
– Richard Hodges
Jan 4 '18 at 12:41
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Error in : object of type 'closure' is not subsettable
...ing fine and then all of a sudden when I ran it again, I got the following error message:
5 Answers
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How much faster is C++ than C#?
... only very time consuming (and thus expensive), but also commonly leads to errors due to over-optimizations.
On the other hand, code in interpreted languages gets faster in later versions of the runtime (.NET CLR or Java VM), without you doing anything. And there are a lot of useful optimizations J...
How do I prevent site scraping? [closed]
... proxy servers and VPNs, you will negatively affect real users.
Make your error message nondescript if you do block
If you do block / limit access, you should ensure that you don't tell the scraper what caused the block, thereby giving them clues as to how to fix their scraper. So a bad idea would...
How do I check two or more conditions in one ?
...check two conditions in one <c:if> ? I tried this, but it raises an error:
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Difference between “\n” and Environment.NewLine
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