Trait IterExt 

pub trait IterExt<T, E>: Iterator<Item = NullableResult<T, E>>
where
    Self: Sized,
{
    // Provided methods
    fn filter_nulls(
        self,
    ) -> FilterMap<Self, fn(NullableResult<T, E>) -> Option<Result<T, E>>>  { ... }
    fn extract_and_find<P>(self, pred: P) -> NullableResult<T, E>
       where P: FnMut(&T) -> Result<bool, E> { ... }
    fn extract_and_find_map<F, U>(self, f: F) -> NullableResult<U, E>
       where F: FnMut(T) -> NullableResult<U, E> { ... }
    fn try_filter<P>(self, pred: P) -> TryFilter<Self, P, T, E> 
       where P: FnMut(&T) -> bool { ... }
    fn try_filter_map<F, U>(self, f: F) -> TryFilterMap<Self, F, T, U, E> 
       where F: FnMut(T) -> Option<NullableResult<U, E>> { ... }
}

Additional methods for iterators over NullableResult

Provided Methods

fn filter_nulls( self, ) -> FilterMap<Self, fn(NullableResult<T, E>) -> Option<Result<T, E>>>

Filter out all the null values. Returns an iterator over Result<T, E>.

fn extract_and_find<P>(self, pred: P) -> NullableResult<T, E>

where P: FnMut(&T) -> Result<bool, E>,

Returns the first value that is an Err or that the predicate accepts.

fn extract_and_find_map<F, U>(self, f: F) -> NullableResult<U, E>

where F: FnMut(T) -> NullableResult<U, E>,

Applies the function to each element until it finds one that the function returns Ok or Err and returns that value.

fn try_filter<P>(self, pred: P) -> TryFilter<Self, P, T, E>

where P: FnMut(&T) -> bool,

Returns an iterator that applies the predicate to each element and filters out the values for which it returns false.

fn try_filter_map<F, U>(self, f: F) -> TryFilterMap<Self, F, T, U, E>

where F: FnMut(T) -> Option<NullableResult<U, E>>,

Returns an iterator that both filters and maps.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors

impl<I, T, E> IterExt<T, E> for I

where I: Iterator<Item = NullableResult<T, E>>,