fail better

Fail better CocoaHeads Paris “Ever tried. Ever failed. No matter.Try Again. Fail again. Fail better.” Samuel Beckett vendredi 12 avril 13

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Fail betterCocoaHeads Paris

“Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.”Samuel Beckett

vendredi 12 avril 13

presentError:

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Introduced in Mac OS 10.4

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-[NSResponder presentError:]

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Follows the responder chain

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-[NSResponder willPresentError:]

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From http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/ErrorHandlingCocoa/ErrorHandling/ErrorHandling.html

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From http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/ErrorHandlingCocoa/ErrorHandling/ErrorHandling.html

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Why so cool?

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Contextualization!

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1. Level of information2. Visual context

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1. Level of information“I want errors precise, but still

understandable”

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➤ generate precise errors➤ rewrite errors for to the context

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2. Visual context“Where did this error occur?”

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➤ embedding errors in the UI

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Available on UIResponder too !

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Available on UIResponder too !

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Re-implement!

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Demo

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Links

github.com/kemenaran/ios-presentErrorgithub.com/hectr/ErrorKit

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[email protected]

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mailto:[email protected]

Thanks

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fail better

Technology

errors precise

precise errors

visual contextvendredi

available onuiresponder

nsresponder presenterror

level of informationi

level of information2

visual contextwhere