# Macro synom::many0 [−] [src]

    macro_rules! many0 {
        ($i:expr, $submac:ident!( $($args:tt)* )) => { ... };
        ($i:expr, $f:expr) => { ... };
    }

Parse zero or more values using the given parser.

- Syntax: `many0!(THING)`
- Output: `Vec<THING>`

You may also be looking for:

- `separated_list!` - zero or more values with separator
- `separated_nonempty_list!` - one or more values
- `terminated_list!` - zero or more, allows trailing separator

    extern crate syn;
    #[macro_use] extern crate synom;

    use syn::Item;
    use syn::parse::item;

    named!(items -> Vec<Item>, many0!(item));

    fn main() {
        let input = "
            fn a() {}
            fn b() {}
        ";

        let parsed = items(input).expect("items");

        assert_eq!(parsed.len(), 2);
        println!("{:?}", parsed);
    }

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)