Shared via Rust Playground

playground.rs

// clap::Values is an iterator of &str
fn arg_to_platforms(platforms_option: Option<clap::Values>) -> Result<Vec<PlatformKind>, String> {
    if let Some(platform_values) = platforms_option {
        let mut platforms: Vec<PlatformKind> = vec![];

        for platform in platform_values {
            platforms.push(platform.parse::<PlatformKind>()?);
        }

        platforms.sort();
        Ok(platforms)
    } else {
        Ok(vec![PlatformKind::Android, PlatformKind::iOS])
    }
}