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kean/safe_cast.m Secret

Created July 2, 2017 06:42
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safe_cast.m
#define safe_cast(TYPE, object) \
({ \
TYPE *dyn_cast_object = (TYPE*)(object); \
[dyn_cast_object isKindOfClass:[TYPE class]] ? dyn_cast_object : nil; \
})
// USAGE:
entity.ID = safe_cast(NSString, data[@"uid"]);
entity.firstName = safe_cast(NSString, data[@"first_name"]);
entity.lastName = safe_cast(NSString, data[@"last_name"]);
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