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Fun thing about relation to . Function composition have almost similar notation, order and process.

Example:
a . b means "a after b"
a ○ b means "a after b"

It makes it a lot easier to understand and remember, what is order of elements in functions composition 😁

@bortzmeyer nice point, but for some reason it was harder for me to comprehend it this way, I made mistakes. But after I started pronouncing function composition as "X after Y" when writing down the code, it started making a lot more sense to me.

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