What programming languages do you have the most experience with?
I would start by making sure to understand these basic concepts:
recursion
pure function
closure
higher-order function
Next I would look at these well-known higher-order functions:
map
filter
fold (aka reduce)
These are ideas that can be used in many programming languages. In particular, if you're familiar with python or javascript, all of the above topics can be understood and applied in a natural way in both of them.
Then you could go into topics that tend to be more relevant in really pure functional languages like Haskell (functors, monads, monoids, combinators...).
This series by Fun Fun Function seems to be a great start in understanding the fundamental concepts of functional programming for those with a background in JavaScript. I mean, at least it surely helped me understand them.
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What programming languages do you have the most experience with?
I would start by making sure to understand these basic concepts:
Next I would look at these well-known higher-order functions:
These are ideas that can be used in many programming languages. In particular, if you're familiar with python or javascript, all of the above topics can be understood and applied in a natural way in both of them.
Then you could go into topics that tend to be more relevant in really pure functional languages like Haskell (functors, monads, monoids, combinators...).
This series by Fun Fun Function seems to be a great start in understanding the fundamental concepts of functional programming for those with a background in JavaScript. I mean, at least it surely helped me understand them.