One way to think about functional programming (FP) is that it's like writing Unix/Linux pipeline commands, a series of commands combined to achieve a result.
Knowing Unix, you start with the 'who' command as your data source, which lists currently logged-in users, forming the basis for further processing.
The output from the 'who' command is structured and consistent, allowing for the extraction of information like unique users logged into the system.
By viewing code visually, you can enhance your understanding of FP, applying familiar Unix methodologies in a programming context.
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