Refactoring With Fire

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Gwyn new bamboo

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Image: Veo_ new bamboo

Image: Davic new bamboo

Survey Time new bamboo

Have you ever wanted to rewrite? Yes Cyborgs Liars new bamboo

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£ new bamboo

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Default: Refactor new bamboo

“ the single worst strategic mistake that any software company can make - Joel on Software new bamboo

Business Value Lots Rewrite Some Refactor None Time new bamboo

Business Value Lots Oops, we're Some out of time! Refactor Rewrite None Time new bamboo

Refactor if: You lack a very good reason to rewrite. new bamboo

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Stuff they have Stuff they need new bamboo

Business Value Lots Rewrite Some Refactor None Time new bamboo

Rewrite if: You have a 15,000 line controller You can drastically cut scope You have access to the original coder You're not going to stall the business new bamboo

Doing the wrong thing, badly. Image: failblog.org new bamboo

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Stuff they have Stuff they need new bamboo

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Rewrite if: You have a 15,000 line controller You can drastically cut scope You have access to the original coder You're not going to stall the business The requirements have changed new bamboo

An Example new bamboo

Stuff they Stuff they have need new bamboo

Rewrite if: You have a 15,000 line controller You can drastically cut scope You have access to the original coder You're not going to stall the business The requirements have changed new bamboo

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Rock > Us < Hard Place Image: Shaggyshoo new bamboo

How to Rewrite new bamboo

“ First, solve the problem. Then, write the code. - John Johnson new bamboo

Image: nathas@gmail.com STEALTH FEATURE Will bomb your project without warning.new bamboo

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Deliver early new bamboo

How to Refactor new bamboo

Boot It Up new bamboo

Routes new bamboo

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Know what you don't know new bamboo

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gitx -- models/wtf.rb new bamboo

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sudo port install qgit new bamboo

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Noisy Partials new bamboo

script/plugin install git://github.com/gwynm/noisy_partials.git new bamboo

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script/plugin install git://github.com/msales/partial_dependencies new bamboo

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Divide and Conquer new bamboo

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Delete and See new bamboo

“ Deleted code is debugged code. - Jeff Sickel new bamboo

Creepingup slowly Creep Up Slowlynew bamboo

Eject Eject Eject git reset --hard HEAD new bamboo

Prejudice. new bamboo

The Database new bamboo

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Slides, comments, reading list: blog.new-bamboo.co.uk (soon!) new bamboo

Code, jobs, awesomeness: new-bamboo.co.uk (Looking for two devs - say "Gwyn sent me") new bamboo

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Refactoring With Fire

by gwynm on Jul 27, 2009

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Refactoring With Fire — Presentation Transcript