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Optional arguments in Rust
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| type Links = Vec<String>; | |
| type Proxies = Vec<String>; | |
| #[derive(Clone, Debug)] | |
| struct Opts { | |
| links: Option<Links>, | |
| proxies: Option<Proxies>, | |
| } | |
| impl Opts { | |
| fn new() -> Self { | |
| Opts { | |
| links: None, | |
| proxies: None, | |
| } | |
| } | |
| fn with_links(self, input: Vec<&str>) -> Self { | |
| let mut new = self; | |
| new.links = Some(input.iter().map(|s| s.to_string()).collect()); | |
| new | |
| } | |
| fn with_proxies(self, input: Vec<&str>) -> Self { | |
| let mut new = self; | |
| new.proxies = Some(input.iter().map(|s| s.to_string()).collect()); | |
| new | |
| } | |
| } | |
| fn with_opts(_: &str, args: Opts) { | |
| println!("{:#?}", args); | |
| } | |
| fn main() { | |
| with_opts("hello", Opts::new().with_links(vec!["http://blabla.com"])); | |
| with_opts("hello", Opts::new().with_proxies(vec!["localhost:8080"])); | |
| } |
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