Dave Crosby on Atomic Spin

RSchema-Hamster: Schemas for Shaping Immutable Data

Hamster gives you immutable structures in Ruby; RSchema gives you schemas to shape your data; RSchema-Hamster brings them together seamlessly.

Ruby on Rails

Managing Complex Permissions in CanCanCan for Rails

Simple example of expressing and encapsulating more complex permissions than CanCan's base syntax accounts for.

Presenter First

Is Presenter First Still Valuable to Modern App Architecture?

When you consider Presenters first, you're forced to draw some of the boundary line between your application and its implementation before you start.

Technical Practices

Test Everything! (on Validating our Work)

Software quality assurance starts by validating our concept of the user, and continues even after the product is in their hands.

Development Practices

Empowering Our Clients to Deploy Their Own Apps

Giving out customer the keys to deployment has been gratifying and liberating--I highly recommend you try it on your own projects.

Project & Team Management

Kanban for a 4th Grader: Task Cards of Happiness

This story of a 4th-grader tackling his homework with task cards reminds us that the 3x5 gems are more than an old Agile tool. They're about happiness.

Project & Team Management

Time-Based Estimates Are for Suckers! (Size-based Is the Way to Go)

GLSEC 2013 presentation addressing three challenges of adopting size-based estimation of software projects.

Development Practices

Pair Programming Is Built on Crucial Conversations

If the book Extreme Programming Explained is "how we roll," then the book Crucial Conversations is, "why we can" at Atomic.

Ruby

Defining Immutable Record Types in Ruby with Hamsterdam

Hamsterdam is a Ruby gem that makes it fun and easy to define and use efficient immutable record types in Ruby, backed by Hamster's Hash class.

jRuby

JrSerialPort: Connect to a Serial Port in JRuby via RXTX

Simple but effective JRuby code that simplifies the use of RXTX for basic serial port communications, with sample terminal.

Ruby

Convenient Trick for Tolerance-based Test Assertions Using #ish

Enabling the #ish syntax to ease the writing of automated Ruby system and integration tests that rely on fuzzy or tolerance-based assertions.

UX/Design Tools

Storyboarding with Inkscape and OmniGraffle

Expedient sketching and document layout using a combination of tools such as Inkscape, OmniGraffle and Rake.

David Crosby

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