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moby--moby/vendor/github.com/armon/go-radix/README.md
Akihiro Suda 5a1b06d7fd rerun vndr
* run latest vndr so as to collect more LICENSE files
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 * vendor github.com/philhofer/fwd with LICENSE.md (MIT)
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Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
2017-03-08 02:29:34 +00:00

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go-radix [![Build Status](https://travis-ci.org/armon/go-radix.png)](https://travis-ci.org/armon/go-radix)
=========
Provides the `radix` package that implements a [radix tree](http://en.wikipedia.org/wiki/Radix_tree).
The package only provides a single `Tree` implementation, optimized for sparse nodes.
As a radix tree, it provides the following:
* O(k) operations. In many cases, this can be faster than a hash table since
the hash function is an O(k) operation, and hash tables have very poor cache locality.
* Minimum / Maximum value lookups
* Ordered iteration
Documentation
=============
The full documentation is available on [Godoc](http://godoc.org/github.com/armon/go-radix).
Example
=======
Below is a simple example of usage
```go
// Create a tree
r := radix.New()
r.Insert("foo", 1)
r.Insert("bar", 2)
r.Insert("foobar", 2)
// Find the longest prefix match
m, _, _ := r.LongestPrefix("foozip")
if m != "foo" {
panic("should be foo")
}
```