The Secret of Information Hiding

When you ask about writing a good code, a common first answer is a call to "encapsulate!" and "hide the internals." In the nearly 50 years since professor David Parnas first wrote about information hiding, it's gone from an academic impracticality to governing the style guides of intro programming courses.

But information hiding is much deeper than the common advice to "make methods private." In this workshop, we'll a little bit into the underlying theory of existential types. We'll discuss what it means for code to have a "secret" and how it enables parts to be changed independently, explore why information-hiding suggests focusing on data over code, and learn the One Weird Trick that can let you read a codebase three times faster.

Transportation:

Canopy City is accessible via Red Line Porter Square (on Bus 83 Route), Red Line Davis Square(on Bus 87 Route), Bus 83, Bus 87, Bus 85, Bus 86, and Hubway bike.

Parking:

Street Parking

Or AMES Parking Deck at 30 Dane St.

Or the parking lot in front of Rite Aid, the spots along the fence facing the street at 530 Somerville Ave

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Principled Software Design Boston is sponsored by Canopy City.

Canopy City is a coworking space based in Somerville, Exeter, Lisbon, and Beijing. Canopy City has established a community of founders, technologists, academics, policy makers, nonprofit leaders, and service providers with a desire to solve both technological and community challenges. Canopy’s network can help connect you and help you reach your goals faster.

Website: http://www.canopy.city/ (http://www.canopy.city/For)

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