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NSError objects have an error area, an error code, and consumer information dictionary For extra facts. This additional information may incorporate, by way of example, a localized description and recovery recommendation, so afterwards code can Screen that for the person.

Both languages can be used in precisely the same venture, due to bridging header data files that Xcode automatically makes concerning The 2 languages.

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Q: What's a selector and what is its reason? Supply an example of in which And just how it might be used.

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On the other hand, quite a few Java specialists will also be remaining current with Google’s most well-liked language for application progress: Kotlin, an Android-distinct language introduced in 2016.

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