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How can I convert an RGB image into grayscale in Python?
I'm trying to use matplotlib to read in an RGB image and convert it to grayscale.
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Custom CSS Scrollbar for Firefox
I want to customize a scrollbar with CSS.
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Copy array by value
When copying an array in JavaScript to another array:
34 Answers
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Functional style of Java 8's Optional.ifPresent and if-not-Present?
In Java 8, I want to do something to an Optional object if it is present, and do another thing if it is not present.
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Functional programming - is immutability expensive? [closed]
The question is in two parts. The first is conceptual. The next looks at the same question more concretely in Scala.
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How to assign a heredoc value to a variable in Bash?
I have this multi-line string (quotes included):
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Undefined reference to pthread_create in Linux
I picked up the following demo off the web from https://computing.llnl.gov/tutorials/pthreads/
14 Answers
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How to ignore xargs commands if stdin input is empty?
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How to only find files in a given directory, and ignore subdirectories using bash
...he find command to find certain files, but some files in sub-directories have the same name which I want to ignore. Thanks for any help. Below is the command that I'm using:
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Create an array with same element repeated multiple times
In Python, where [2] is a list, the following code gives this output:
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