[−][src]Function show_notes::e004::apply_function_to_i64
pub fn apply_function_to_i64<F>(a_number_function: F, the_number: i64) -> i64 where
F: Fn(i64) -> i64,
Shows how to take a function as an argument.
Note that this involves specifying a generic (the <F>
syntax), bounded
by a trait
(the where...
syntax), a concept to which we will return in
much more detail in a few episodes.