Trait MetaIteratorExt 

pub trait MetaIteratorExt<'a, M>
where
    M: 'a + Borrow<Meta1>,
{
    // Required methods
    fn to_multi_map<K, KF>(
        self,
        path_to_key: KF,
    ) -> Result<HashMap<K, Vec<(usize, M)>>>
       where K: Hash + Eq,
             KF: Fn(&Path) -> Result<Option<K>>;
    fn to_unique_map<K, KF>(
        self,
        path_to_key: KF,
    ) -> Result<HashMap<K, (usize, M)>>
       where K: Hash + Eq,
             KF: Fn(&Path) -> Result<Option<K>>;
}

Constructs and returns map from syn::Meta iterator

Required Methods

fn to_multi_map<K, KF>( self, path_to_key: KF, ) -> Result<HashMap<K, Vec<(usize, M)>>>

where K: Hash + Eq, KF: Fn(&Path) -> Result<Option<K>>,

Constructs and returns a multi-value map from syn::Meta iterator

fn to_unique_map<K, KF>(self, path_to_key: KF) -> Result<HashMap<K, (usize, M)>>

where K: Hash + Eq, KF: Fn(&Path) -> Result<Option<K>>,

Constructs and returns a unique-value map from syn::Meta iterator. Err if duplicates.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<'a, I, M> MetaIteratorExt<'a, M> for I

where M: 'a + Borrow<Meta1>, I: Iterator<Item = (usize, M)>,