Enum gc_sequence::flatten_result::FlattenOk

#[must_use = "sequences do nothing unless stepped"]
pub enum FlattenOk<S, I> {
    First(S),
    Second(I),
}

Variants

First(S)Second(I)

Methods

impl<S, I> FlattenOk<S, I>

pub fn new(s: S) -> FlattenOk<S, I>

Trait Implementations

impl<'gc, S, I, E, I2> Sequence<'gc> for FlattenOk<S, I> where
    S: Sequence<'gc, Output = Result<I, E>>,
    I: Sequence<'gc, Output = Result<I2, E>>, 

type Output = Result<I2, E>

fn step(&mut self, mc: MutationContext<'gc, '_>) -> Option<Self::Output>

impl<S, I> Drop for FlattenOk<S, I>

fn drop(&mut self)

Executes the destructor for this type.

impl<S, I> Collect for FlattenOk<S, I> where
    S: Collect,
    I: Collect, 

fn needs_trace() -> bool

As an optimization, if this type can never hold a Gc pointer and trace is unnecessary to call, you may implement this method and return false. The default implementation returns true, signaling that Collect::trace must be called.

fn trace(&self, cc: CollectionContext)

Must call Collect::trace on all held Gc pointers. If this type holds inner types that implement Collect, a valid implementation would simply call Collect::trace on all the held values to ensure this.