Crate pushgen[−][src]
Expand description
Push-style design pattern for processing of ranges and data-streams.
This is a Rust-based approach to the design pattern described by transrangers.
While the discussion linked targets C++, the same basic principle of pull-based iterators applies
to Rust as well (with some modifications since Rust doesn’t have a concept of an end
iterator
like C++ does).
Example
for item in data.iter().filter(|x| *x % 2 == 0).map(|x| x * 3) { process(item); }
can be rewritten as
use pushgen::{SliceGenerator, GeneratorExt}; // Assume data is a slice SliceGenerator::new(&data).filter(|x| *x % 2 == 0).map(|x| x * 3).for_each(process);
Features
std
: Enable boxing and trait implementations for types that requires std
. If this feature
is disabled, pushgen
is no_std
. This is enabled by default.
test
: Enable test tools that can be used to test generators and adaptors. This is disabled by default.
Performance
I make no performance-claims, however there are some benchmarked cases where the push-based approach wins over the iterator approach, but I have made no attempts to analyze this in any depth.
Modules
Implements various generators.
Generator adaptor implementations. See GeneratorExt
for more info.
test
Structs
A generator that generates values from a slice.
Enums
The enum Either
with variants Left
and Right
is a general purpose
sum type with two cases.
The result of generator runs.
The result value of a try_*
reduction.
Value-consumption result.
Traits
Conversion from a Generator
.
Trait for generating values into a closure.
Provides extension-methods for all generators.