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Difference between two dates in Python
I have two different dates and I want to know the difference in days between them. The format of the date is YYYY-MM-DD.
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Is there a more elegant way of adding an item to a Dictionary safely?
I need to add key/object pairs to a dictionary, but I of course need to first check if the key already exists otherwise I get a " key already exists in dictionary " error. The code below solves this but is clunky.
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Spring classpath prefix difference
Documented here it states
4 Answers
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How to tell bash that the line continues on the next line
In a bash script I got from another programmer, some lines exceeded 80 columns in length. What is the character or thing to be added to the line in order to indicate that the line continues on the next line?
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Convert data.frame column format from character to factor
I would like to change the format (class) of some columns of my data.frame object ( mydf ) from charactor to factor .
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UML class diagram enum
I am modeling a class diagram. An attribute of a class is an enumeration. How do I model this? Normally you do something like this:
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Preserve colouring after piping grep to grep
There is a simlar question in Preserve ls colouring after grep’ing but it annoys me that if you pipe colored grep output into another grep that the coloring is not preserved.
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Setup RSpec to test a gem (not Rails)
It is pretty easy with the added generator of rspec-rails to setup RSpec for testing a Rails application. But how about adding RSpec for testing a gem in development?
I am not using jeweler or such tools. I just used Bundler ( bundle gem my_gem ) to setup the structure for the new gem and edit the *...
How do I use CMake?
I am trying to use CMake in order to compile opencv.
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How to show vertical line to wrap the line in Vim?
I'm interested in finding a way to show a vertical line at column 80 in Vim (not GVim).
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