39 lines
910 B
Swift
39 lines
910 B
Swift
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//
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// Misc.swift
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// wallet
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//
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// Created by Jason on 8/30/20.
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// Copyright © 2020 Jason. All rights reserved.
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//
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import UIKit
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extension Array {
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func chunked(into size: Int) -> [[Element]] {
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return stride(from: 0, to: count, by: size).map {
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Array(self[$0 ..< Swift.min($0 + size, count)])
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}
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}
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}
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extension String {
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func toQR(scale: CGFloat = 15.0) -> UIImage? {
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let data = self.data(using: String.Encoding.ascii)
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// Create the filter and transform it's scale
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if let filter = CIFilter(name: "CIQRCodeGenerator") {
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filter.setValue(data, forKey: "inputMessage")
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let transform = CGAffineTransform(scaleX: scale, y: scale)
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if let output = filter.outputImage?.transformed(by: transform) {
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return UIImage(ciImage: output)
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}
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}
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return nil
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}
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}
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