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How to implement the --verbose or -v option into a script?
I know the --verbose or -v from several tools and I'd like to implement this into some of my own scripts and tools.
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Converting RGB to grayscale/intensity
When converting from RGB to grayscale, it is said that specific weights to channels R, G, and B ought to be applied. These weights are: 0.2989, 0.5870, 0.1140.
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Why does sed not replace all occurrences?
If I run this code in bash:
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Bulk insert with SQLAlchemy ORM
Is there any way to get SQLAlchemy to do a bulk insert rather than inserting each individual object. i.e.,
10 Answers
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What is the difference between concurrency, parallelism and asynchronous methods?
Concurrency is having two tasks run in parallel on separate threads. However, asynchronous methods run in parallel but on the same 1 thread. How is this achieved? Also, what about parallelism?
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Correct way to populate an Array with a Range in Ruby
I am working through a book which gives examples of Ranges being converted to equivalent arrays using their "to_a" methods
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What's the difference between a proxy server and a reverse proxy server? [closed]
What is the difference between a proxy server and a reverse proxy server?
21 Answers
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How to get the concrete class name as a string? [duplicate]
I want to avoid calling a lot of isinstance() functions, so I'm looking for a way to get the concrete class name for an instance variable as a string.
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Why does the Visual Studio editor show dots in blank spaces?
I have a strange bug in the Visual Studio text editor.
All my blank spaces are replaced by a "."
11 Answers
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Commit specific lines of a file to git [duplicate]
How do I commit a few specific line ranges from a file to git? while ignoring some other line changes in the same file.
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