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sed or awk: delete n lines following a pattern
... range, it matches just at the line containing the pattern (/pattern/) and then runs a series of commands: {n;N;N;N;N;d}, which basically prints the next line (n) and then reads and finally discards the next 4 lines (N;N;N;N;d).
– pimlottc
Oct 2 '13 at 1:38
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The tilde operator in Python
...why you need to call .isnull() or np.isnan() on your data array first, and then invert the resulting boolean values.
– geofflee
Nov 7 '17 at 5:35
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How do I tell Spring Boot which main class to use for the executable jar?
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If you do NOT use the spring-boot-starter-parent pom, then from the Spring documentation:
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>1.1.3.RELEASE</version>...
Good examples using java.util.logging [closed]
...tic final Logger LOGGER = Logger.getLogger( ClassName.class.getName() );
Then, you can just use various facilities of the Logger class.
Use Level.FINE for anything that is debugging at the top level of execution flow:
LOGGER.log( Level.FINE, "processing {0} entries in loop", list.size() );
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How can I undo a `git commit` locally and on a remote after `git push`
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Generally, make an "inverse" commit, using:
git revert 364705c
then send it to the remote as usual:
git push
This won't delete the commit: it makes an additional commit that undoes whatever the first commit did. Anything else, not really safe, especially when the changes have already ...
Given a class, see if instance has method (Ruby)
... means ONLY methods that you defined explicitly with:
def my_method
end
then read this:
In Ruby, a property (attribute) on your model is basically a method also. So method_defined? will also return true for properties, not just methods.
For example:
Given an instance of a class that has a Stri...
Modular multiplicative inverse function in Python
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If you happen to be using sympy, then x, _, g = sympy.numbers.igcdex(a, m) does the trick.
– Lynn
Sep 16 '16 at 18:15
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Run R script from command line
...would write / run an R script, in your file add the #!/path/to/rscript and then chmod +x <your script.r> and ./<your script.r>
– Mehul Rathod
Aug 19 '13 at 4:59
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IntelliJ IDEA with Junit 4.7 “!!! JUnit version 3.8 or later expected:”
...config and right click on the file you want to test and Run again. It will then create the config under Android Tests section and it run on device/emulator.
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Undo changes in entity framework entities
...onnection. I tested it on existing project and it finished somewhat faster then above Rollback procedure, which makes it far better choice if one wants to revert entire database state. Rollback could cherry pick tho.
– majkinetor
Jul 3 '14 at 12:02
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