that's not my code!
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That’s not my code!@MicheleTitolo
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The Art of Code
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Purpose
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What are you trying to solve?
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Fixing a bug?
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Adding a new feature?
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Updating a web API?
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This helps focus your search
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First thing’s first.
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Does it build?
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No! Wait!
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You can and will learn a lot before building
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Meta Information
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Who? What? When? Where?
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Why? How?
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Who? What? When? Where?
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Who?
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Source Control
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git log
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Or use a GUI
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How many people?
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Are all the commits by one user?
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Are the commit messages useful?
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Xcode File Headers
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//// MRTViewController.m// Awesome App//// Created by Michele Titolo on 5/03/14.// Copyright (c) 2014 Awesome Co. All rights reserved.//
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Find in Project
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grep
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Were the files mostly created by one person?
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Were they created by 17 people?
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Too many cooks in the kitchen
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Common encounters
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One shop, two shopred shop, blue shop
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Bifurcated code
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No source control?No names in headers?
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This tells you about the client
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What?
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Use the app
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There will be things you don’t understand until you use it.
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Use the app
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Ask questions
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Identify edge cases
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...because you will have to deal with them
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Oh, and write all of this down
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Future you will thank you
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When?
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What iOS version?
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What version was it built for?
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Updating iOS 4 apps is a PITA
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Backwards compatibility?
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Is it using new stuff?
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How is it checking version?
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The further back, the more fragile the code will be
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Gaps in development?
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If it went months untouched, why?
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Years?
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Technical Debt
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Where?
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Contractors? In-House? Shop?
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In-house -> out-of-house
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Contractors - who?
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Dev Shops
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Outsourced?
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Not written by someone who’s native language is yours
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i.e. “colour” vs “color”
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iOS Experience?
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Internationalization
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What countries is the app available?
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What languages are supported?
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The Code
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The fun part!
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Why?
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Who, What, When, Where
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Just don’t jump to conclusions
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How?
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File Structure
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Xcode vs HD
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Images
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Make a map of where everything is
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Building
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Does it compile?
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...because it doesn’t always
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Missing dependencies?
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Weird build settings?
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Warnings
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Number
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Severity
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#warning
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Comments
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TODO, FIXME, ???, $#^@!
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Documentation?
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Headers
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README
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The .pch
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Tests
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Dependencies
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Submodules
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CocoaPods
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???
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The Art of Code
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Who, What, Where, When, Why, How
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Art takes time
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Art takes patience
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Code takes time
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Code takes patience
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Thanks!@MicheleTitolo
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