filter Dict()


I have a very basic question. When I was looking up how to filter values in Dict(), I came across this documentation

What does p represent, and what do last§ and first§ mean?


p is an argument that is passed to the anonymous function. For example, x->x+2 is an anonymous function that adds 2 to the input value, x.


See the docs on anonymous functions.

(Also, please quote your code instead of screenshots).