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Printing the last column of a line in a file
...ed. tail -f means wait for more input, but there are no more lines in file and so the pipe to grep is never closed.
If you omit -f from tail the output is shown immediately:
tail file | grep A1 | awk '{print $NF}'
@EdMorton is right of course. Awk can search for A1 as well, which shortens the ...
How to count duplicate value in an array in javascript
...eturns the value of counts[x] if it is set, otherwise 0. Then just add one and set it again in the object and the count is done.
– Constantinius
Feb 7 '17 at 11:52
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How to reshape data from long to wide format
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+1 and you don't need to rely on external packages, since reshape comes with stats. Not to mention that it's faster! =)
– aL3xa
May 5 '11 at 0:07
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Convert Enum to String
... This deserves more attention. The obvious limitation notwithstanding, i.e. the requirement for compile-time input. In my opinion this should be preferred whenever possible. 'Rename' and 'find all references' take it into account as well, potentially avoiding magic strings and duplicate ...
How to remove convexity defects in a Sudoku square?
...ving a Sudoku from an input image using OpenCV (as in Google goggles etc). And I have completed the task, but at the end I found a little problem for which I came here.
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Java: Equivalent of Python's range(int, int)?
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From Java 8, IntStream and LongStream have methods range and rangeClosed.
– Jose Manuel Gomez Alvarez
Dec 19 '18 at 22:51
a...
Synchronization vs Lock
...in order to access the critical resource. It gives method such as park() and unpark() .
11 Answers
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Where to place AutoMapper.CreateMaps?
...nterface of words" - can't enforce it, but you expect it, so you can code (and refactor) if necessary.
EDIT:
Just thought I'd mention that I now use AutoMapper profiles, so the above example becomes:
public static class AutoMapperWebConfiguration
{
public static void Configure()
{
Map...
JUnit 4 compare Sets
..., setB );
}
}
This @Test will pass if the two Sets are the same size and contain the same elements.
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How to easily map c++ enums to strings
I have a bunch of enum types in some library header files that I'm using, and I want to have a way of converting enum values to user strings - and vice-versa.
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