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# fast-zip
A modified version of clojure.zip that uses records internally.
## Usage
```clojure
[fast-zip "0.5.0"]
```
This is a drop in replacement for clojure.zip. Simply require ``fast-zip.core``
instead of ``clojure.zip``.
## Benchmark
The below traverses a vector zip with three levels and sums the numbers. To
run, use ``lein perforate``.
======================
WARNING: Final GC required 1.450308932831415 % of runtime
Goal: Benchmark vector zip.
-----
Case: :fast-zip
Evaluation count : 246120 in 60 samples of 4102 calls.
Execution time mean : 242.777689 µs
Execution time std-deviation : 1.965914 µs
Execution time lower quantile : 238.996103 µs ( 2.5%)
Execution time upper quantile : 247.075613 µs (97.5%)
Overhead used : 1.947263 ns
Found 2 outliers in 60 samples (3.3333 %)
low-severe 2 (3.3333 %)
Variance from outliers : 1.6389 % Variance is slightly inflated by outliers
Case: :clojure.zip
Evaluation count : 62820 in 60 samples of 1047 calls.
Execution time mean : 960.326181 µs
Execution time std-deviation : 4.915537 µs
Execution time lower quantile : 950.592132 µs ( 2.5%)
Execution time upper quantile : 969.813479 µs (97.5%)
Overhead used : 1.947263 ns
For the clojurescript version, make sure you have node.js installed along
with the ``benchmark`` module. Then use ``lein clean-bench``
## TODO
* Create benchmarks that represent more functionality and different use
cases.
## Thanks
Thanks to
* Brandon Bloom for his advice.
* Zach Tellman
* Joel Holdbrooks for the ClojureScript version.
## License
Distributed under the Eclipse Public License, the same as Clojure.
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