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- import UIKit
- /// Helper UIImage extension.
- extension UIImage {
- /// Checks if image has alpha component
- var hasAlpha: Bool {
- let result: Bool
- guard let alpha = cgImage?.alphaInfo else {
- return false
- }
- switch alpha {
- case .none, .noneSkipFirst, .noneSkipLast:
- result = false
- default:
- result = true
- }
- return result
- }
- /// Convert to data
- func cache_toData() -> Data? {
- #if swift(>=4.2)
- return hasAlpha
- ? pngData()
- : jpegData(compressionQuality: 1.0)
- #else
- return hasAlpha
- ? UIImagePNGRepresentation(self)
- : UIImageJPEGRepresentation(self, 1.0)
- #endif
- }
- }
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