Trait asparit::Consumer

pub trait Consumer<I>: WithSetup + Send + Sized {
    type Folder: Folder<I, Result = Self::Result>;
    type Reducer: Reducer<Self::Result>;
    type Result: Send;
    pub fn into_folder(self) -> Self::Folder;

    pub fn split(self) -> (Self, Self, Self::Reducer) { ... }
    pub fn split_at(self, _index: usize) -> (Self, Self, Self::Reducer) { ... }
    pub fn is_full(&self) -> bool { ... }
}

A consumer is effectively a generalized "fold" operation, and in fact each consumer will eventually be converted into a Folder. What makes a consumer special is that, like a Producer, it can be split into multiple consumers using the split_off_left method. When a consumer is split, it produces two consumers, as well as a reducer. The two consumers can be fed items independently, and when they are done the reducer is used to combine their two results into one. See the README for further details.

Associated Types

type Folder: Folder<I, Result = Self::Result>

The type of folder that this consumer can be converted into.

type Reducer: Reducer<Self::Result>

The type of reducer that is produced if this consumer is split.

type Result: Send

The type of result that this consumer will ultimately produce.

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Required methods

pub fn into_folder(self) -> Self::Folder

Convert the consumer into a folder that can consume items sequentially, eventually producing a final result.

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Provided methods

pub fn split(self) -> (Self, Self, Self::Reducer)

Divide the consumer into two consumers, one processing the left items and one processing the right items from. Also produces a reducer that can be used to reduce the results at the end.

pub fn split_at(self, _index: usize) -> (Self, Self, Self::Reducer)

Divide the consumer into two consumers, one processing items 0..index and one processing items from index... Also produces a reducer that can be used to reduce the results at the end.

pub fn is_full(&self) -> bool

Hint whether this Consumer would like to stop processing further items, e.g. if a search has been completed.

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Implementors

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