Returns a Boolean value that indicates whether this set is a strict
subset of the given set.
Set A is a strict subset of another set B if every member of A is
also a member of B and B contains at least one element that is not a
member of A.
let employees: Set = ["Alicia", "Bethany", "Chris", "Diana", "Eric"]
let attendees: Set = ["Alicia", "Bethany", "Diana"]
print(attendees.isStrictSubset(of: employees))
// Prints "true"
// A set is never a strict subset of itself:
print(attendees.isStrictSubset(of: attendees))
// Prints "false"
- Parameter other: A set of the same type as the current set.
- Returns: true if the set is a strict subset of other; otherwise,
false.
Returns a Boolean value that indicates whether this set is a strict
subset of the given set.
Set A is a strict subset of another set B if every member of A is
also a member of B and B contains at least one element that is not a
member of A.
let employees: Set = ["Alicia", "Bethany", "Chris", "Diana", "Eric"]
let attendees: Set = ["Alicia", "Bethany", "Diana"]
print(attendees.isStrictSubset(of: employees))
// Prints "true"
// A set is never a strict subset of itself:
print(attendees.isStrictSubset(of: attendees))
// Prints "false"
- Parameter other: A set of the same type as the current set.
- Returns:
trueif the set is a strict subset ofother; otherwise,false.