Function select_number_from_choices 

pub fn select_number_from_choices<T: PartialOrd + Display + FromStr + Copy>(
    prompt: Option<&str>,
    repeat_message: Option<&str>,
    choices: Vec<T>,
    show_choices_on_failure: bool,
) -> T

Prompts the user to input a number from a selection of number choices, and returns the number the user selected. Panics if there are no numbers in the vector passed into the function.

Arguments

• prompt - An option that can contain a string slice which holds the prompt to present the user with.
• repeat_message - An option that can contain a string slice which holds a repeat message which will be displayed if the user enters invalid input
• choices - A vector of numbers of type T which make up the choices the user can select from.
• show_choices_on_failure - Whether or not to show the available choices after invalid input.

Example

use simple_cli::*;
let choices: Vec<i8> = vec![1,2,3];
let choice = select_number_from_choices::<i8>(Some("Enter 1, 2 or 3"), None, choices, true);