fn main(args: Array<String>)
    if args[0] == 'greet' then
        println 'Hello!'
    end
end

fn main(args: Array<String>)
    args.each { println it }
end

fn main(args: Array<String>)
    if args.find { it == 'greet' } then
        println 'There was a greet arg'
    end
end

// longer
fn main(args: Array<String>)
    let findIndexResult: Option<Int> = args.findIndex { it == 'greet' }
    if findIndexResult.isSome() then
        let index: Int = findIndex.unwrap()
        println "greet arg was index ${index}"
    end
end

// shorter with destructuring
fn main(args: Array<String>)
    if let Some(greetIndex) = args.findIndex { it == 'greet' } then
        println "greet arg was index ${greetIndex}"
    end
end

fn main(args: Array<String>)
    let parsed: CliArgs = std::cli::parse(args)
    let greetingCount = parsed.get::<Int>('--count', '-c').orElse(1)
    if let Some(greeting) = parsed.get('greeting', 'g') then
        greetingCount.times { println greeting }
    end
end