BGBubbleTea

This is Core Data app which based on concept NSPredicate & NSSortDescriptor of Core Data to filter and sort out query data into it. seed.json file is used as source of data into this for creating a Dummy Data into Core Data into this

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NSPredicate used for filtering Tea Cafes

lazy var cheapVenuePredicate: NSPredicate = {
  return NSPredicate(format: "%K=%@", #keyPath(Venue.priceInfo.priceCategory), "$")
}()

lazy var moderateVenuePredicate: NSPredicate = {
  return NSPredicate(format: "%K=%@", #keyPath(Venue.priceInfo.priceCategory), "$$")
}()

lazy var expensiveVenuePredicate: NSPredicate = {
  return NSPredicate(format: "%K=%@", #keyPath(Venue.priceInfo.priceCategory), "$$$")
}()

lazy var offeringDealPredicate: NSPredicate = {
  return NSPredicate(format: "%K > 0", #keyPath(Venue.specialCount))
}()

lazy var walkingDistancePredicate: NSPredicate = {
  return NSPredicate(format: "%K < 1000", #keyPath(Venue.location.distance))
}()

lazy var hasUserTipPredicate: NSPredicate = {
  return NSPredicate(format: "%K > 0", #keyPath(Venue.stats.tipCount))
}()

NSSortDescriptor used for sorting Tea Cafes

lazy var nameSortDescriptor: NSSortDescriptor = {
    let compareSelector = #selector(NSString.localizedStandardCompare(_:))
    return NSSortDescriptor(key: #keyPath(Venue.name), ascending: true, selector: compareSelector)
}()

lazy var distanceSortDescriptor: NSSortDescriptor = {
    return NSSortDescriptor(key: #keyPath(Venue.location.distance), ascending: true)
}()

lazy var priceSortDescriptor: NSSortDescriptor = {
    return NSSortDescriptor(key: #keyPath(Venue.priceInfo.priceCategory), ascending: true)
}()