Trait polars_arrow::legacy::utils::CustomIterTools

pub trait CustomIterTools: Iterator {
    // Provided methods
    unsafe fn trust_my_length(
        self,
        length: usize,
    ) -> TrustMyLength<Self, Self::Item> 
       where Self: Sized { ... }
    fn collect_trusted<T: FromTrustedLenIterator<Self::Item>>(self) -> T
       where Self: Sized + TrustedLen { ... }
    fn collect_reversed<T: FromIteratorReversed<Self::Item>>(self) -> T
       where Self: Sized + TrustedLen { ... }
    fn all_equal(&mut self) -> bool
       where Self: Sized,
             Self::Item: PartialEq { ... }
    fn fold_options<A, B, F>(&mut self, start: B, f: F) -> Option<B>
       where Self: Iterator<Item = Option<A>>,
             F: FnMut(B, A) -> B { ... }
    fn contains<Q>(&mut self, query: &Q) -> bool
       where Self: Sized,
             Self::Item: Borrow<Q>,
             Q: PartialEq { ... }
}

Provided Methods

unsafe fn trust_my_length( self, length: usize, ) -> TrustMyLength<Self, Self::Item>

where Self: Sized,

Turn any iterator in a trusted length iterator

Safety

The given length must be correct.

fn collect_trusted<T: FromTrustedLenIterator<Self::Item>>(self) -> T

where Self: Sized + TrustedLen,

fn collect_reversed<T: FromIteratorReversed<Self::Item>>(self) -> T

where Self: Sized + TrustedLen,

fn all_equal(&mut self) -> bool

where Self: Sized, Self::Item: PartialEq,

fn fold_options<A, B, F>(&mut self, start: B, f: F) -> Option<B>

where Self: Iterator<Item = Option<A>>, F: FnMut(B, A) -> B,

fn contains<Q>(&mut self, query: &Q) -> bool

where Self: Sized, Self::Item: Borrow<Q>, Q: PartialEq,

Object Safety

This trait is not object safe.

Implementors

impl<T> CustomIterTools for T

where T: Iterator + ?Sized,