Randori: Group Practice

Chaos In MotionMike Clement@mdclement

mike@softwareontheside.comhttp://blog.softwareontheside.com

“Often the true value of a thing isn’t the

thing itself, but instead is the activity that

created it.”-Dave Thomas

Dave Thomas on Practice

“It’s like taking a group of fit kids and telling them that they have four quarters to beat the Redskins (hey, we manage by objectives, right?). In software we do our practicing on the job, and that’s why we make mistakes on the job. We need to find ways of splitting the practice from the profession. We need practice sessions.”

http://codekata.pragprog.com/2007/01/code_kata_backg.html

CERAMICSQuantity or Quality?

Shu Ha Ri

• 守 Shu – House of Laws; to abide by, to defend• 破 Ha – Stone; to break• 離 Ri – Bird; to leave, to depart• Similar to Dryfus model

– Novice, Advanced Beginner, Competent, Proficient, Expert

• Similar to Apprentice model– Apprentice, Craftsman, Master

Rules

• Pair Programming• Use TDD• Start from scratch• Everyone should be following• Pair should be explaining• Audience gives suggestions only with when

Green

Quick Concepts

TDD• Red• Green• Refactor

Simple Design• Passes all tests• Clear, expressive, consistent• No duplication• Minimal

Ways to get Green

• Fake it• Obvious implementation• Triangulation

Rules

• Pair Programming• Use TDD• Start from scratch• Everyone should be following• Pair should be explaining• Audience gives suggestions only with when

Green• Today: Will switch pairs about every 5 minutes

Lids down!

“Often the true value of a thing isn’t the

thing itself, but instead is the activity that

created it.”-Dave Thomas

Numbers to LCD

123456789Translates to:// _ _ _ _ _ _ _// | _| _||_||_ |_ ||_||_|// ||_ _| | _||_| ||_| _|

RANDORI!

RETROSPECTIVELook forward by looking back

Forms of Practice

• Katas• “Katas” or Solo Randori• Group Randori• Day of Randori• Koans• Coderetreat

Action Items!

• Work to get your team to practice a Randori together.

• Explore other forms of practice.• Practice, Practice, Practice!• Attend the Utah Software Craftsmanship

Group!

“Often the true value of a thing isn’t the

thing itself, but instead is the activity that

created it.”-Dave Thomas

Me

• @mdclement• mike@softwareontheside.com• http://blog.softwareontheside.com• Utah Software Craftsmanship Group– https://groups.google.com/forum/#!

forum/ut-software-craftsmanship– @utahsc– First Wednesday, Neumont, Room 300