Fast iterator library
npm install quickiterFast iterator library.
This library provides functions and objects for iterating over sequences
using the iteration protocol.
See introduction for a more in-depth introduction to
iterators.
Quickiter's functionality similar to several packages on NPM. Unlike most of
those packages, this library does not use the new ES6 generators. Instead
it uses only the iterator protocol. This yields (pun intended) a significant
performance improvement while more or less completely retaining the
functionality of generator based iterators.
No. Generator functions can do a lot more than create iterators. For example,
they can be used to write coroutines. The scope of this library is strictly
to work with iterable sequences.
To add quickiter package to your project, use the following commands:
``
npm install --save quickiter
or
`
yarn add quickiter
- Terminology
- Why iterators?
- Iteration functions
- Iterable wrapper object
The benchmarks folder contains a rudimentary benchmark that is used to
optimize the library code. Here is a sample of the results as run on a Core
i7 7700HQ Windows 10 PC and NodeJS 10.15.
`
procedural: 11.29ms (fastest)
single reduce: 12.51ms (+1.22ms / 1.1x slower)
single forEach: 12.92ms (+1.62ms / 1.1x slower)
Iter object: 16.31ms (+5.01ms / 1.4x slower)
iter* composition: 17.10ms (+5.81ms / 1.5x slower)
generators: 28.29ms (+17.00ms / 2.5x slower)
map/filter chain: 40.31ms (+29.02ms / 3.6x slower)