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| //********************************************************************************************************************** | ||
| // | ||
| // String+Numeric.swift | ||
| // Helper function for numeric parsing | ||
| // Copyright ©2019 Peter Baumgartner. All rights reserved. | ||
| // | ||
| //********************************************************************************************************************** | ||
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| import Foundation | ||
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| //---------------------------------------------------------------------------------------------------------------------- | ||
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| // MARK: - | ||
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| public extension String | ||
| { | ||
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| /// Strips all non numeric charactef from a string. This includes leading and trailing whitespaces, as well | ||
| /// as any letters that make up units. En example would be "100%" -> "100". The resulting string can be easily | ||
| /// converted to an Int or Double. | ||
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| func strippingNonNumericCharacters() -> String | ||
| { | ||
| let numbericCharacters = Set("0123456789.,") | ||
| return self.filter { numbericCharacters.contains($0) } | ||
| } | ||
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| var intValue : Int? | ||
| { | ||
| return Int(self.strippingNonNumericCharacters()) | ||
| } | ||
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| var floatValue : Float? | ||
| { | ||
| return Float(self.strippingNonNumericCharacters()) | ||
| } | ||
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| var doubleValue : Double? | ||
| { | ||
| return Double(self.strippingNonNumericCharacters()) | ||
| } | ||
| } | ||
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| //---------------------------------------------------------------------------------------------------------------------- |