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Toon Daeleman, developer at Engagor, explains how functional languages use recursion instead of loops.

Most programming languages have language structures to loop through lists and do interesting stuff with those lists. When you're used to programming using one of those languages, it can be pretty terrifying to have your basics taken away from you when you jump into a functional programming language like Scheme or Haskell. Let's see what the problem is that functional languages have with loops and how they solved it.

Read more [engagor.github.io]

Christopher Pitt experimented a bit with generators and wrote down the thought process on his blog.

Generators are awesome. If they’re new to you then take some time to read where they come from and what they do. If you’ve come from a particular programming language background, they may be difficult for you to understand.

They were, and continue to be, tricky for me to grasp. So I’ve spent loads of time trying to understand them, and what they can do for my code.

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