Great for nearest neighbor search in k dimensions! (as long as k is reasonable)

Wrap the methods of a class or module to output call info. See a tree of calls made to wrapped methods with argument values and return values.

A specced little language written with ruby and treetop. It has lambdas, recursion, conditionals, arrays, hashes, ranges, strings, arithmetics and some other stuff. It even has a small code import facility.

This gem is designed for transformation of Ruby source code (eiher in the form of files or strings) to the Ruby nodes (syntax trees) used by Ruby MRI internals. Obtained nodes can be serialized to the platform-dependent binary or ASCII strings and restored and launched from serialized format. Su...

HackTree lets you organize and share your console hacks in a simple and efficient way. * Create hacks using a simple and uniform DSL. * Describe your hacks, much like you describe tasks in Rakefiles. * List available hacks with descriptions right in your console. * Share hacks with your teammate...

Report expired/about to expires certificates in a directory tree.

This gem provides ui components for Rails Applicaitons based on Cells, that can be used to edit the criteria_operator expression trees.

Human Query Language for full text search engines. Provides a lenient parser and associated tools for a self-contained and search-engine agnostic query language suitable for use by end users. Lenient in that is will produce a parse tree for any input, given a default operator and by generally ign...

Remove deeply nested keys from hash.

wikitree - wikitext/script abstract syntax tree (ast)

Caplets modernizes your capistrano deployments. At its most basic, it provides a fast, efficient git-based deployment without copying release trees or symlink tomfoolery. In addition, it includes modules for common tasks such as writing config files and crontabs, working with bundler, and us...

That gem creates an html advanced tree for you with an simple command!

This gem provides basic xAP Automation protocol support for EventMachine applications. It was developed for use in Nitrogen Logic controller software. There are no automated tests and the code could be improved in many ways, but it may still be useful to someone. This is a Ruby library written ...

Ruby implementations of a Stack, Queue, Linked List, Binary Tree, LRU Cache, Heap, Priority Queue, Graph and Weighted Graph. More to come!

Add jekyll support for a semantic tree (in markdown).

Ruby implementation of Merkle Sum Sparse Merkle Tree

The Simple Declarative Language provides an easy way to describe lists, maps, and trees of typed data in a compact, easy to read representation. For property files, configuration files, logs, and simple serialization requirements, SDL provides a compelling alternative to XML and P...

Diru is a Change Directory (cd) utility for augmenting Unix Shell functionality. Diru makes it easy and efficient to jump around in Project's directories. Diru uses client/server architecture, which enables sharing of directory info and state between terminal sessions. Each Server serves one Pro...

Simple Abstract Syntax Tree and a parser for Scheme, which is intended to be a part of a Scheme implementation written in Ruby.

Asagi evolved out of the ExperienceSequencer. Note that you'll still need to modify the output tree include certain forms of machine learning in the action script.