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How to crop an image in OpenCV using Python
How can I crop images, like I've done before in PIL, using OpenCV.
8 Answers
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Partly cherry-picking a commit with Git
I'm working on 2 different branches: release and development .
7 Answers
7
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C++ preprocessor __VA_ARGS__ number of arguments
Simple question for which I could not find answer on the net. In variadic argument macros, how to find the number of arguments? I am okay with boost preprocessor, if it has the solution.
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Do sealed classes really offer performance Benefits?
I have come across a lot of optimization tips which say that you should mark your classes as sealed to get extra performance benefits.
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How can I call controller/view helper methods from the console in Ruby on Rails?
When I load script/console , sometimes I want to play with the output of a controller or a view helper method.
14 Answers
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Get current directory name (without full path) in a Bash script
How would I get just the current working directory name in a bash script, or even better, just a terminal command.
20 Answe...
How do I create test and train samples from one dataframe with pandas?
I have a fairly large dataset in the form of a dataframe and I was wondering how I would be able to split the dataframe into two random samples (80% and 20%) for training and testing.
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How to change the cursor into a hand when a user hovers over a list item?
I've got a list, and I have a click handler for its items:
23 Answers
23
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Regular expression to allow spaces between words
I want a regular expression that prevents symbols and only allows letters and numbers. The regex below works great, but it doesn't allow for spaces between words.
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How can I read input from the console using the Scanner class in Java?
How could I read input from the console using the Scanner class? Something like this:
15 Answers
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