Zipper [](https://travis-ci.org/trivio/zipper)
======
A datastructure, first described by Huet, is used to traverse and
manipulate immutable trees. This library is a port of the zipper
implementation found in Clojure.
Usage
-----
The zipper module provides several functions for creating a Loc object which
represents the current focal point in the tree.
```
>>> import zipper
>>> top = zipper.list([1, [2, 3], 4])
>>> print top.down().right().node()
[2,3]
>>> print top.down().right().down().node()
2
>>> print top.down().right().down().replace(0).root()
[1, [0, 3], 4]
```
======
A datastructure, first described by Huet, is used to traverse and
manipulate immutable trees. This library is a port of the zipper
implementation found in Clojure.
Usage
-----
The zipper module provides several functions for creating a Loc object which
represents the current focal point in the tree.
```
>>> import zipper
>>> top = zipper.list([1, [2, 3], 4])
>>> print top.down().right().node()
[2,3]
>>> print top.down().right().down().node()
2
>>> print top.down().right().down().replace(0).root()
[1, [0, 3], 4]
```
1 maintainer
Release files for zipper 0.0.3
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Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| zipper-0.0.3.tar.gz | 3.9 kB | Details |
Release files / zipper-0.0.3.tar.gz
| Download URL | zipper-0.0.3.tar.gz |
|---|---|
| Size | 3.9 kB |
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