Definitely, good catch - map was probably a bad choice of name. This example is not a pure functional style, but higher-order functions do not need to be pure. I thought that example was more interesting - if you do need a puremap I generally recommend using the standard library. I'd argue the above functions are still "functional programming", just not "pure functional programming". I don't know that I'd call it unsafe - fearless mutation like this is more idiomatic Rust.
I'll write up an example later this morning once I've had some coffee!
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
Definitely, good catch -
mapwas probably a bad choice of name. This example is not a pure functional style, but higher-order functions do not need to be pure. I thought that example was more interesting - if you do need a puremapI generally recommend using the standard library. I'd argue the above functions are still "functional programming", just not "pure functional programming". I don't know that I'd call it unsafe - fearless mutation like this is more idiomatic Rust.I'll write up an example later this morning once I've had some coffee!