Created
June 12, 2020 07:09
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Swift - Property Wrapper - Clamped Value
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@propertyWrapper | |
struct ClampedValue<F: FloatingPoint> { | |
var value: F | |
let min: F? | |
let max: F? | |
init(wrappedValue: F, min: F? = nil, max: F? = nil) { | |
value = wrappedValue | |
self.min = min | |
self.max = max | |
} | |
var wrappedValue: F { | |
set { value = newValue } | |
get { | |
var value: F = self.value | |
if let min: F = min { | |
if value < min { | |
value = min | |
} | |
} | |
if let max: F = max { | |
if value > max { | |
value = max | |
} | |
} | |
return value | |
} | |
} | |
} |
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