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Returns a closed range that contains both of its bounds.

Use the closed range operator (...) to create a closed range of any type that conforms to the Comparable protocol. This example creates a ClosedRange<Character> from "a" up to, and including, "z".

let lowercase = "a"..."z"
print(lowercase.contains("z"))
// Prints "true"

Parameters: minimum: The lower bound for the range. maximum: The upper bound for the range.

Declaration

Returns a countable closed range that contains both of its bounds.

Use the closed range operator (...) to create a closed range of any type that conforms to the Strideable protocol with an associated signed integer Stride type, such as any of the standard library's integer types. This example creates a CountableClosedRange<Int> from zero up to, and including, nine.

let singleDigits = 0...9
print(singleDigits.contains(9))
// Prints "true"

You can use sequence or collection methods on the singleDigits range.

print(singleDigits.count)
// Prints "10"
print(singleDigits.last)
// Prints "9"

Parameters: minimum: The lower bound for the range. maximum: The upper bound for the range.

Declaration