this post was submitted on 01 Sep 2023
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Programming
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Honest question: is there a mapping function that handles the case where you need to loop through an iterable, and conditionally reference an item one or two steps ahead in the iterable?
Not that I'm aware of but that's a condition where you're thinking with an index. What's the difference you're looking for?
Something like parsing a string that could have command codes in it of varying length. So I guess the difference is, is this a 1-, 2-, or 3-character code?
I have something like this in a barcode generator and I keep trying to find a way to make it more elegant, but I keep coming back to index and offset as the simplest and most understandable approach.
So you could generate lists of 1, 2, and 3 character code items rather than looking at index +1 or something.