I have created an extension of NumberFormatter and binaryInteger, to convert Int to String with a space between thousands like thise: 11111 -> 11 111 Now, in another place, i need to reverse the convertion from a specific string to a Float , like this: 11 111 -> 11111.
Here is the first extensions of NumberFormatter and BinaryInteger:
extension Formatter {
static let withSeparator: NumberFormatter = {
let formatter = NumberFormatter()
formatter.groupingSeparator = " "
formatter.allowsFloats = true
formatter.numberStyle = .decimal
return formatter
}()
}
extension BinaryInteger {
var formattedWithSeparator: String {
return Formatter.withSeparator.string(for: self) ?? ""
}
}
So, how could i code an another extension, to make the reverse process? thank you.
Try this:
extension String {
func backToFloat() -> Float {
// Make a copy of original string
var temp = self
// Remove spaces
temp.removeAll(where: { $0 == " " })
return Float(temp) ?? 0.0
}
}
print("1 234 567.2".backToFloat())
// log: 1234567.2
To enable Float -> String
and Double -> String
:
extension FloatingPoint {
var formattedWithSeparator: String {
return Formatter.withSeparator.string(for: self) ?? ""
}
}
print(12345678.12.formattedWithSeparator)
// log: 12 345 678.12