Graceful.Dev

Assisted Refactoring In today's episode, we'll examine how the availability of tools to aid refactoring can change how we write code.

In today's episode, we'll examine how the availability of tools to aid refactoring can change how we write code.
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Fail And Raise Today's episode is about a semantic convention for error handling that I learned from Jim Weirich.

Today's episode is about a semantic convention for error handling that I learned from Jim Weirich.
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More Keyword Arguments Today we go a little deeper into keyword arguments in Ruby 2.0/2.1, covering a few use cases we didn't cover in the last episode.

Today we go a little deeper into keyword arguments in Ruby 2.0/2.1, covering a few use cases we didn't cover in the last episode.
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Keyword Arguments Today's episode is a guide to transitioning various hash argument idioms to Ruby 2.0/2.1 keywords.

Today's episode is a guide to transitioning various hash argument idioms to Ruby 2.0/2.1 keywords.
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Two Refactorings Today's dish is a refactoring approached from two different perspectives. Enjoy!

Today's dish is a refactoring approached from two different perspectives. Enjoy!
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Graceful.Dev stands in solidarity with immigrants and migrants - our friends, colleagues, students, vendors, and heroes without whom coding work would be immeasurably poorer. I'll be donating the first month of all subscriptions started today to the MICA project here in St. Louis. - Avdi

Sequel, Postgres, JSON Recently we looked at the Sequel library for interacting with SQL databases. Today, we'll use Sequel again to play with the native JSON support in PostgreSQL 9.3.

Recently we looked at the Sequel library for interacting with SQL databases. Today, we'll use Sequel again to play with the native JSON support in PostgreSQL 9.3.
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Extracting Ghost Load We've used the "ghost object" pattern to lazily load attributes of a model object. And we've made a macro to easily declare "ghost-loadable" attribute accessors. Today we complete the generalization of ghost loading by extracting a module that makes it easy for any model object to declare lazily-loaded attributes.

We've used the "ghost object" pattern to lazily load attributes of a model object. And we've made a macro to easily declare "ghost-loadable" attribute accessors.
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Macro When is it appropriate to metaprogram? Today's episode looks at one situation in which it may be a good choice.

When is it appropriate to metaprogram? Today's episode looks at one situation in which it may be a good choice.
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Schwartzian Transform Today's episode demonstrates a technique for speeding up the process of sorting some collections.

Today's episode demonstrates a technique for speeding up the process of sorting some collections.
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Ghost Load In today's episode we learn at how to implement lazy loading using the "ghost object" pattern.

In today's episode we learn at how to implement lazy loading using the "ghost object" pattern.
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Sequel ActiveRecord has become practically synonymous with SQL database access in Ruby, but it's not the only way to talk to SQL stores. Today we'll explore Sequel, a wonderfully rich tool for interacting with many different SQL RDBMSes.

ActiveRecord has become practically synonymous with SQL database access in Ruby, but it's not the only way to talk to SQL stores. Today we'll explore Sequel, a wonderfully rich tool for interacting with many different SQL RDBMSes.
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Since Ruby 3.1 you can find out all of a class' subclasses dynamically--no extra metaprogramming required!

Identity Map In the last episode we looked at the problem of "aliasing", here there are multiple objects representing a single row in a database. Today, we'll look at one possible solution to that problem. Notes: DataMapper: http://datamapper.org/ Ruby Object Mapper (ROM): http://rom-rb.org/ Perpetuity: https://github.com/jgaskins/perpetuity

In the last episode we looked at the problem of "aliasing", here there are multiple objects representing a single row in a database. Today, we'll look at one possible solution to that problem.
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Aliasing Today we look at a perncious problem that sometimes plagues code which uses an Object-Relational Mapper (ORM). Documentation of the ActiveRecord inverse_of option mentioned in the episode can be found here: http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html

Today we look at a perncious problem that sometimes plagues code which uses an Object-Relational Mapper (ORM).
Documentation of the ActiveRecord inverse_of option mentioned in the episode can be found here: http://api.rubyonrails.
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Dotenv In this episode we look at a tool that I've found invaluable for managing configuration in my applications.

In this episode we look at a tool that I've found invaluable for managing configuration in my applications.
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REPL-Driven Development In today's episode I cover a classic development technique that doesn't get enough press these days. Interactive, exploratory development was and is common in the Lisp world, and Ruby's dynamic nature is aptly suited to take advantage of this style of programming. Today I'll show you how I used REPL-driven development in Pry and Emacs to begin to build a video export tool. By the way, right after I made this episode I discovered that Conrad Irwin had done a RubyConf talk on REPL-driven development. You can watch it here: https://www.youtube.com/watch?v=D9j_Mf91M0I

In today's episode I cover a classic development technique that doesn't get enough press these days. Interactive, exploratory development was and is common in the Lisp world, and Ruby's dynamic nature is aptly suited to take advantage of this style of programming.
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Using Ruby Struct For basic mutable data structures, you can't get much quicker and easier than Ruby's "Struct" class!Get these tips in your inbox: https://avdi.codes/devseeds/

For basic mutable data structures, you can't get much quicker and easier than Ruby's "Struct" class! But do you know everything it can do? Full screencast, now free to all!
youtu.be/0fei3uDkjNE

Site News #26: Policy, Structure, and Memoization Hi there, graceful devs! Here’s what’s new in the garden…Content UpdatesThere are two hefty new episodes since the last update! The first one, Pol

Hi there, graceful devs! Here’s what’s new in the garden… Content Updates There are two hefty new episodes since the last update! The first one, Policy as Structure, introduces a powerful approach to architecting your code for flexibility and change.
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Site News #26: Policy, Structure, and Memoization Hi there, graceful devs! Here’s what’s new in the garden… Content Updates There are two hefty new episodes since the last update! The first one, Pol

We've been busy in the Graceful.Dev garden. Here's what's new!
graceful.dev/site-news-26...

Pluggable Selector Pattern in Ruby Originally captured in Kent Beck's classic book "Smalltalk Best Practice Patterns", Pluggable Selector is an under-used strategy for making methods more flex...

Originally captured in Kent Beck's classic book "Smalltalk Best Practice Patterns", Pluggable Selector is an under-used strategy for making methods more flexible. Learn how to use it in Ruby, in this classic Graceful.Dev episode now free to all!
youtu.be/rMsL3ZH4A2s

Resist Memoization (Teaser) Memoization of a complex object can seem like a free optimization... but there are always trade-offs. Full episode now up for members: https://graceful.dev/t...

Memoization of a complex object can seem like a free optimization... but there are always trade-offs. Full episode now up for members: https://graceful.dev/topic/resist-memoization/
youtu.be/t5UjASNKChQ

Class @@variables are conventionally avoided in modern Ruby. Refine your #Ruby style with Graceful.Dev courses!

Subclassing Array in Ruby Sooner or later you will be tempted to subclass one of Ruby's core collection classes. Learn why that's a bad idea - and a better alternative!Get these tips ...

Learn why subclassing core Ruby classes like Array and Hash is a bad idea, and what to do instead. A classic from the Graceful.Dev archives, now free!
youtu.be/Zc_OdXLCT4M

Policy as Structure (teaser) Get two weeks of Graceful.Dev Pro for free: https://graceful.dev/youtube

Don't let your codebase come down with flag-itis! Model your operating policies as composed structure, rather than as tangled conditionals. Full episode now live for subscribers: https://graceful.
www.youtube.com/watch?v=KvQ07O75XSU

Know your Ruby division operations, and pick the right one for the job! Learn more in the "Crystaline Ruby" course on Graceful.Dev

Site News #25: Filter Map and Snippets Celebrate Spring with new videos and new code snippets

Celebrate Spring with new videos and new code snippets

Get 2 weeks of Graceful.Dev Pro Free: https://graceful.dev/bluesky
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With Ruby 3, it's easier than ever to compose objects with forwarded methods!


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Pay it Forward Originally published in October 2012 as RubyTapas #17, this dense episode deals with Ruby, mockist testing, and the concept of Command-Query Separation. Ther...

Full episode now free! Originally published in October 2012 as RubyTapas #17, this dense episode deals with the UNIX "at" commands, Ruby, TDD, how mock-object pain can give us insight into code smells, and the concept of Command-Query Separation.
youtu.be/gQUC-5lbQm0

Know your Ruby conversion protocols, and pick the right one for the task at hand! Learn more in the "Crystaline Ruby" course, on Graceful.Dev