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查看iOS设备系统占比 https://developer.apple.com/support/app-store/ 阅读全文
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#import "WKSVGConvert.h" #import <WebKit/WebKit.h> @interface WKSVGConvert () <WKNavigationDelegate> @property (nonatomic, strong) WKWebView *webView; 阅读全文
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struct RingShap: Shape { var pointSize: CGFloat = 10.0 func path(in rect: CGRect) -> Path { let drawRect = CGRectInset(rect, 0.5 * pointSize, 0.5 * po 阅读全文
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import Foundation public class NodeDrawingEngine: NSObject { /// Scene root node open var node: Node = Group() { didSet { self.renderer?.dispose() sel 阅读全文
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Argument type 'Any' expected to be an instance of a class or class-constrained type Any是任意类型，AnyObject必须是对象实例，如果是OC的id类型，那么对应的应该是Any 阅读全文
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@Published 标记对象定义的属性变更可以被监听，当对应字段变化时会触发对象 objectWillChange 通知，订阅了该属性的View也会收到值改变的通知 /// A type that publishes a property marked with an attribute. /// 阅读全文