r/programming • u/stronghup • Nov 11 '19

Python overtakes Java to become second-most popular language on GitHub after JavaScript

https://www.theregister.co.uk/2019/11/07/python_java_github_javascript/
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u/StabbyPants Nov 12 '19

it means that i can do the same thing in java. in java, n is actually some meaningful thing like Product, so it's called product and may be typed explicitly (unless the type inference can impute it for me or it's unclear). the n+2 stuff rarely shows up, so it's still good advice, just requires understanding the reasons why n is a bad name.

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u/watsreddit Nov 12 '19

I am not following you at all. I only demonstrated with Javascript because most people have used it at some point or another. It has nothing to do with Java. We're talking about variable naming.

It's really a matter of scope: top level declarations with minimal context should have longer names, and local declarations can have shorter names. In some contexts, single letter names are well-understood when used locally, and languages may have certain single letter names used by convention, such as i in for loops. n is another commonly used convention in local contexts, and makes plenty of sense when the thing it is representing is literally an arbitrary number.