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Step-by-step debugging with IPython
...s, this thread shows how to accomplish everything described in the OP (and more) using
a new important debugger in Emacs called RealGUD which can operate with any debugger (including ipdb).
The Emacs package isend-mode.
The combination of these two packages is extremely powerful and allows one to ...
What are the advantages of NumPy over regular Python lists?
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NumPy's arrays are more compact than Python lists -- a list of lists as you describe, in Python, would take at least 20 MB or so, while a NumPy 3D array with single-precision floats in the cells would fit in 4 MB. Access in reading and writing ...
Regular Expression For Duplicate Words
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Moreover, it won't catch triplicates (or more), not when one of the dup/triplicate is at the end of the string
– Nico
Feb 18 '16 at 20:03
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Change multiple files
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see the updated answer. if you need more info, please, ask an official question, so people could help you.
– lenik
May 5 '12 at 1:18
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How to check if a specified key exists in a given S3 bucket using Java
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Use the jets3t library. Its a lot more easier and robust than the AWS sdk. Using this library you can call, s3service.getObjectDetails(). This will check and retrieve only the details of the object (not the contents) of the object. It will throw a 404 if the ...
How to replace ${} placeholders in a text file?
...o sed commands into one: sed -e "s/\${i}/1/" -e "s/\${word}/dog/"; that is more efficient. You can run into problems with some versions of sed at maybe 100 such operations (problem from years ago - may not still be true, but beware HP-UX).
– Jonathan Leffler
J...
How does the SQL injection from the “Bobby Tables” XKCD comic work?
... If the original statement were an INSERT, then the parenthesis would make more sense. It would also explain why the database connection isn't in read-only mode.
– dan04
Aug 10 '10 at 4:02
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How to get the instance id from within an ec2 instance?
...instance-id || die \"wget instance-id has failed: $?\"`"
An example of a more advanced use (retrieve instance ID as well as availability zone and region, etc.):
EC2_INSTANCE_ID="`wget -q -O - http://169.254.169.254/latest/meta-data/instance-id || die \"wget instance-id has failed: $?\"`"
test -n ...
Test if characters are in a string
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grepl(value, chars, fixed = TRUE)
# TRUE
Use ?grepl to find out more.
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Removing duplicate rows in Notepad++
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More powerful than excel.
– Vasu
Apr 22 '15 at 21:58
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