# Abstract, Extract ### How abstractions and libraries can help you untie that big ball of twine that is your sorry excuse of a source code * * \* Come up with a better title before Wednesday

# Daniel Saidi ### iOS Lead @ BookBeat

# Windows Mobile 2005 ### Before it was cool

# Team Yellow

# So why am I here?

# BookBeat ### A startup story

## Competitors * Audible * Storytel * Nextory * ...and many others

# Keeping it together ### How do you keep your code base sane?

# But what if you fail? ### How do you know if your code went bad?

# Code-smell! ### (it actually does smell)

# Raise of hands ### Favorite code-smells?

# Duplicated code ### e.g. validation, formatting, business logic

# Long functions ### Hard to test, cyclomatic complexity

# Complicated code ### If your code needs comments, you know

# Large classes ### Does a lot of stuff...that it shouldn't

# Spaghetti code ### No red thread, no obvious design

# Hard coupling ### A depends on B which depends on...

# Bad habits ### Unit tests disabled, no version control etc.

# So, BookBeat? ### How did the code-base look after a year?

# Let's take a look

# Wrapping up

# Thank you! Daniel Saidi · [@danielsaidi](https://twitter.com/danielsaidi)