Int

Contents

• Instance methods
  • Iteration
    • times
    • upTo
    • downTo
  • Math
    • isEven
    • isOdd
    • clamp
    • abs
    • gcd
    • lcm
    • isIn
  • Conversion
    • digits
• Class methods
  • random

#Instance methods ##Iteration

times

• times <T> (function: () -> T)
• times (function: () -> ())

Iterates function , self times.

• times <T> (function: (Int) -> T)

Iterates function , with an Int index argument, self times.

Example

5.times { println("Hi") }
/* Prints → */
// → Hi
// → Hi
// → Hi
// → Hi
// → Hi

---

upTo

• upTo (limit: Int, function: (Int) -> ())

Iterates function, passing in integer values from self up to and including limit.

Example

5.upTo(7, { println($0) })
/* Prints → */
// → 5
// → 6
// → 7

---

downTo

• downTo (limit: Int, function: (Int) -> ())

Iterates function, passing in integer values from self down to and including limit.

Example

7.downTo(5, { println($0) })
/* Prints → */
// → 7
// → 6
// → 5

##Math

isEven

• isEven () -> Bool

Returns true if self is even.

Example

4.isEven()
// → true

---

isOdd

• isOdd () -> Bool

Returns true if self is odd.

Example

3.isOdd()
// → true

---

clamp

• clamp (range: Range<Int>) -> Int
• clamp (min: Int, max: Int) -> Int

Computes the value of self clamped to a range defined by range (or min...max).

Example

5.clamp(0...4)
// → 4

1.clamp(2...4)
// → 2

---

abs

• abs () -> Int

Computes the absolute value of self.

Example

(-2).abs()
// → 2

1.abs()
// → 1

---

gcd

• gcd (n: Int) -> Int

Computes the greatest common divisor of self and n.

Example

6.gcd(3)
// → 3

---

lcm

• lcm (n: Int) -> Int

Computes the least common multiple of self and n.

Example

3.lcm(4)
// → 12

---

isIn

• isIn (range: Range<Int>, strict: Bool = false) -> Bool

If strict is true checks that range.startIndex < self < range.endIndex - 1, otherwise, range.startIndex <= self <= range.endIndex - 1.

Example

5.isIn(4..10)
// → true

##Conversion

digits

• digits () -> Array<Int>

Returns an array of integers where each element is a digit of self.

Example

512.digits()
// → [5, 1, 2]

#Class methods

random

• random(min: Int = 0, max: Int) -> Int

Returns a random integer between min and max (inclusive).

Example

Int.random(min: 5, max: 10)
// → 6