Function leftwm_core::utils::helpers::relative_find

pub fn relative_find<T, F>(
    list: &[T],
    reference_finder: F,
    shift: i32,
    should_loop: bool
) -> Option<&T>where
    F: Fn(&T) -> bool,

Find element relative to reference element.

eg. to get the next element, use shift 1, to get the previous element, use shift -1.

Arguments

• list - The list to get the element from
• reference_finder - Predicate to find the reference element in the list
• shift - The shift (distance) of the element you try to find relative to the reference element, can be negative to move left
• should_loop - If the list should loop when the shift goes beyond the start/end of the list

Example

let list = vec!["hello", "world", "foo", "bar"];
let result = leftwm_core::utils::helpers::relative_find(&list, |&e| e == "world", 2, false);
assert_eq!(result, Some(&"bar"));