Swift Language Numbers Convert numbers to/from strings
Example
Use String initializers for converting numbers into strings:
String(1635999) // returns "1635999"
String(1635999, radix: 10) // returns "1635999"
String(1635999, radix: 2) // returns "110001111011010011111"
String(1635999, radix: 16) // returns "18f69f"
String(1635999, radix: 16, uppercase: true) // returns "18F69F"
String(1635999, radix: 17) // returns "129gf4"
String(1635999, radix: 36) // returns "z2cf"
Or use string interpolation for simple cases:
let x = 42, y = 9001
"Between \(x) and \(y)" // equivalent to "Between 42 and 9001"
Use initializers of numeric types to convert strings into numbers:
if let num = Int("42") { /* ... */ } // num is 42
if let num = Int("Z2cF") { /* ... */ } // returns nil (not a number)
if let num = Int("z2cf", radix: 36) { /* ... */ } // num is 1635999
if let num = Int("Z2cF", radix: 36) { /* ... */ } // num is 1635999
if let num = Int8("Z2cF", radix: 36) { /* ... */ } // returns nil (too large for Int8)
