== DESCRIPTION: Charlie is a library for genetic algorithms (GA) and genetic programming (GP). == FEATURES: - Quickly develop GAs by combining several parts (genotype, selection, crossover, mutation) provided by the library. - Sensible defaults are provided with any genotype, so often you only n...

A lightweight tool to create new ruby library trees, with helpers to make gemming and maintaining a breeze.

A toolkit to work with the SQL language. Incluses a SQL parser, tree manipulations, and tools for testing and monitoring

A layer of abstraction on top of Ripper for handling Abstract Syntax Trees in Ruby.

Phylogenetic analysis using IQ-Tree via BioRuby

Rind is a templating engine that turns HTML (and XML) into node trees and allows you to create custom tags or reuse someone else’s genius. Rind gives web devs tags to work with and provides the same thing to app devs as an object. This project is just getting started so watch out for sharp corner...

The abstract syntax tree for ruby mappers

Simple PDF maze generator, based on spanning trees. Can generate one or many mazes of different complexities.

Parses gene ontology .obo files, links terms through `is_a` and provides methods to find levels and traverse the tree.

Command line app that produces the MD5 hash of all files in a set of folders

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.

Stores data in a B+tree structure

Installer for C5.0 and GritBot, tools for decision-tree learning and data cleansing.

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

This plugin provides an enhanced acts_as_nested_set mixin for ActiveRecord, the object-relational mapping layer of the framework Ruby on Rails. The original nested set in Rails lacks many important features, such as moving branches within a tree.

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...

This is the original commit of the rtags source code as written by Keiju ISHITSUKA as part of the irb project. Now irb has moved into the main Ruby source tree rtags has become an independent project

It takes in a String and gives you back a stupid data structure of commands, blocks, and Strings. You then do stuff to make that stuff come alive. Whatever... I don't have time to tell you exactly since you will use Treetop anyway: https://github.com/nathansobo/treetop