Crazy fast http radix based router
Generic, unopinionated Simulated Annealing library for constraint satisfaction problems. Solve timetabling, scheduling, resource allocation, and any optimization problem with custom constraints.
Underlying schema language parsed from arktype syntax.
A library to scan QR codes in React.
SAP Fiori tools - Specification
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The fCoSE layout for Cytoscape.js by Bilkent with fast compound node placement
default constraints for @betterer/betterer
Validate XML schema forbusiness rules and returns all the possible failures
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Validate GraphQL fields
Constraints are container elements with a configurable constraint size, like width or height.
Resources installer
The best Slate lists extension out there
Underlying schema language parsed from arktype syntax.
Low level core functionality for interacting with the Delegation Framework
Structural matching for JavaScript
Fancy duck typing for the most serious of ducks.
the complete solution for node.js command-line programs
Scaffold and template utilities for Kalp projects
Custom scrollbars with native scrolling
Terminal and Web console for Kubernetes
Business Time / Market Hours logic for TypeScript
A plugin for extending blueprint with external constraints
This Ruby gem solves CSPs using custom constraints
Adds custom handling for database uniqueness constraints to ActiveRecord.
From http://edgeguides.rubyonrails.org/active_record_migrations.html#types-of-schema-dumps: There is however a trade-off: db/schema.rb cannot express database specific items such as triggers, stored procedures or check constraints. While in a migration you can execute custom SQL statements, the schema dumper cannot reconstitute those statements from the database. If you are using features like this, then you should set the schema format to :sql. No longer is this the case. You can now use the default schema format (:ruby) and still preserve your check constraints.
Adds a add_foreign_key_constraint schema method, and extends the schema dump code to output these foreign key constraints. Only MySQL and PostgreSQL are currently supported. Examples ======== # adds a constraint on projects.customer_id with parent customers.id add_foreign_key :projects, :customer_id, :customers, :id # adds a constraint on projects(a, b) with parent(a, b) with the default RESTRICT update/delete actions add_foreign_key "child", ["a", "b"], "parent", ["a", "b"] # adds a constraint with the ON UPDATE action set to CASCADE and the ON DELETE action set to SET NULL add_foreign_key 'projects', 'customer_id', 'customers', 'id', :on_update => :cascade, :on_delete => :set_null The following actions are defined: :restrict :no_action :cascade :set_null (aka :nullify) :set_default Note that MySQL does not support :set_default, and also treats :no_action as :restrict. Compatibility ============= Supports mysql, mysql2, postgresql. Currently tested against Rails 3.2.13 on 2.0.0p0 and Rails 3.2.13, 3.1.8, 3.0.17, and 2.3.14 on Ruby 1.8.7.
Validrb is a powerful Ruby schema validation library inspired by Pydantic and Zod. It provides type coercion, rich constraints, schema composition, union types, discriminated unions, custom validators, JSON Schema generation, and serialization.
Given an initial set of records to delete prune_ar deletes all other records (accessible via ActiveRecord) that are now orphaned due to a belongs_to relation which is now non-existent. This allows you to safely delete records that you want to delete without creating orphaned records in another table (& without violating foreign key constraints if you use them). This can be used to prune a production database (given deletion criteria for top level parent-less independent entities) for use in a development environment without compromising customer data.
==== Ruby Topic Maps (RTM) RTM is a Topic Maps engine written in Ruby. See http://rtm.topicmapslab.de/ for instructions. Several backends and extensions are available as separate gems. ==== Overview From a developer's perspective, RTM is a schema-less database management system. The Topic Maps standard (described below) on which RTM is based provides a way of creating a self-describing schema just by using it. ==== Quickstart require 'rtm' connection = RTM.connect # uses the default Ontopia in-memory backend topic_map = connection.create "http://example.org/my_topic_map/" some_topic = topicmap.get!("identifier_of_the_topic") some_topic["-"] = "default name for the topic" topic_map.to_xtm("my_xtm_file.xtm") ==== Topic Maps Topic Maps is an international industry standard (ISO13250) for interchangeably representing information about the structure of information resources used to define topics, and the relationships between topics. A set of one or more interrelated documents that employs the notation defined by this International Standard is called a topic map. A topic map defines a multidimensional topic space - a space in which the locations are topics, and in which the distances between topics are measurable in terms of the number of intervening topics which must be visited in order to get from one topic to another, and the kinds of relationships that define the path from one topic to another, if any, through the intervening topics, if any. In addition, information objects can have properties, as well as values for those properties, assigned to them. The Topic Maps Data Model which is used in this implementation can be found on http://www.isotopicmaps.org/sam/sam-model/. ==== Backends * rtm-ontopia: JRuby only, recommended, uses Ontopia: http://code.google.com/p/ontopia/ * rtm-tinytim: JRuby only, uses TinyTiM: http://tinytim.sourceforge.net/ * rtm-activerecord: uses a custom ActiveRecord schema ==== Extensions * rtm-tmql: Adds support for the Topic Maps Query Language (TMQL), http://isotopicmaps.org/tmql/ * rtm-tmcl: Adds support for the Topic Maps Constraint Language (TMCL), http://isotopicmaps.org/tmcl/ ==== License Copyright 2009 Topic Maps Lab, University of Leipzig. Apache License, Version 2.0
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