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Fail better
CocoaHeads Paris
“Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.”
Samuel Beckett
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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 information
2. 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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No content
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No content
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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-presentError
github.com/hectr/ErrorKit
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Thanks