PredicateBuilder

Used to indicate that you want to query the actual object checked when the predicate is run. Behaves like the SELF in the SQL-like query:

NSPredicate(format: "SELF in names")

Describes the key of class T’s String property you want to query. For example, when creating a predicate that compares a class’ string property to a given string:

class Kraken: NSObject {
    var theyCallMe: String
}
NSPredicate(format: "theyCallMe == 'Chief Supreme'")

The property parameter would be the theyCallMe in the example predicate format.

• Parameters:
• property: The name of the property in the class of type T
• file: Name of the file the function is being called from. Defaults to #file
• line: Number of the line the function is being called from. Defaults to #line

Describes the key of class T’s number type property you want to query. For example, when creating a predicate that compares a number property to a given value:

class Kraken: NSObject {
    var numberOfHumansEaten: Int
}
NSPredicate(format: "numberOfHumansEaten >= 6")

The property parameter would be the numberOfHumansEaten in the example predicate format.

• Parameters:
• property: The name of the property in the class of type T
• file: Name of the file the function is being called from. Defaults to #file
• line: Number of the line the function is being called from. Defaults to #line

Describes the key of class T’s NSDate property you want to query. For example, when creating a predicate compares a class’ date property to another given date:

class Kraken: NSObject {
    var birthdate: NSDate
}
NSPredicate(format: "birthdate == %@", NSDate())

The property parameter would be the birthdate in the example predicate format.

• Parameters:
• property: The name of the property in the class of type T
• file: Name of the file the function is being called from. Defaults to #file
• line: Number of the line the function is being called from. Defaults to #line

Describes the key of class T’s Bool property you want to query. For example, when creating a predicate that checks against a given Bool flag in a class:

class Kraken: NSObject {
    var isHungry: Bool
}
NSPredicate(format: "isHungry == true")

The property parameter would be the isHungry in the example predicate format.

• Parameters:
• property: The name of the property in the class of type T
• file: Name of the file the function is being called from. Defaults to #file
• line: Number of the line the function is being called from. Defaults to #line

Describes the key of class T’s CollectionType property you want to query. This is also the starting point for subqueries on list properties. For example, when creating a predicate that checks if a class’ array property has 5 objects:

class Kraken: NSObject {
    var friends: [LegendaryCreatures]
}
NSPredicate(format: "friends.@count == 5")

The property parameter would be the friends in the example predicate format.

• Parameters:
• property: The name of the property in the class of type T
• file: Name of the file the function is being called from. Defaults to #file
• line: Number of the line the function is being called from. Defaults to #line

Describes a member with a custom type that belongs to class T that you want to query. Recursive since it returns an instance of PredicateMemberQuery that is a subclass of PredicateBuilder. For example, when creating a predicate for a specific custom type member:

class Kraken: NSObject {
    var friend: LegendaryCreature
}
NSPredicate(format: "friend == %@", legendaryCreature)

The property parameter would be the friend in the example predicate format.

• Parameters:
• property: The name of the property member in the class of type T
• memberType: The Reflectable type of the property member
• file: Name of the file the function is being called from. Defaults to __FILE__
• line: Number of the line the function is being called from. Defaults to __LINE__