Author: Chris Lattner
If you work on a Swift project that follows the Model-View-ViewModel (MVVM) architecture or similar, you may want to jump to counterpart in Xcode from your view to your model, and then to your view model. (ie. by using Ctrl+Cmd+Up and Ctrl+Cmd+Down).
You can do this in recent versions of Xcode by setting a configuration default.
From a terminal, just type this command and press Enter:
defaults write com.apple.dt.Xcode IDEAdditionalCounterpartSuffixes -array-add "ViewModel" "View"
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<?xml version="1.0" encoding="UTF-8"?> | |
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | |
<plist version="1.0"> | |
<!-- iOS 10, macOS Sierra, and friends bring a new logging subsystem that's | |
supposed to scale from the kernel, up to frameworks, and up to apps. It defaults | |
to a more regimented, privacy-focused approach that large apps and complex | |
systems need. | |
It, along with Activity Tracing introduced in iOS 8 and macOS Yosemite and the | |
Console app in macOS Sierra, hope to help you graduate from caveman debugging to |
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import UIKit | |
/// A validation rule for text input. | |
public enum TextValidationRule { | |
/// Any input is valid, including an empty string. | |
case noRestriction | |
/// The input must not be empty. | |
case nonEmpty | |
/// The enitre input must match a regular expression. A matching substring is not enough. | |
case regularExpression(NSRegularExpression) |
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#import <UIKit/UIKit.h> | |
#import <objc/runtime.h> | |
// Hook with ObjC runtime functions | |
%config(generator=internal) | |
// New methods created below | |
@interface UIGestureRecognizer () | |
+ (void)hs_beginForcingAllNewGestureRecognizersToAllowPencilInput; | |
+ (void)hs_endForcingAllNewGestureRecognizersToAllowPencilInput; |
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- (void)loadCameraRollAssetToInstagram:(NSURL*)assetsLibraryURL andMessage:(NSString*)message | |
{ | |
NSString *escapedString = [assetsLibraryURL.absoluteString urlencodedString]; | |
NSString *escapedCaption = [message urlencodedString]; | |
NSURL *instagramURL = [NSURL URLWithString:[NSString stringWithFormat:@"instagram://library?AssetPath=%@&InstagramCaption=%@", escapedString, escapedCaption]]; | |
[[UIApplication sharedApplication] openURL:instagramURL]; | |
} |
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// | |
// DON'T do this, or else you risk a deadlock (e.g., by accidentally performing it in a different order somewhere) | |
// | |
dispatch_async(firstQueue, ^{ | |
dispatch_sync(secondQueue, ^{ | |
// code requiring both queues | |
}); | |
}); |
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extension NSView { | |
var snapshot: NSImage { | |
guard let bitmapRep = bitmapImageRepForCachingDisplayInRect(bounds) else { return NSImage() } | |
bitmapRep.size = bounds.size | |
cacheDisplayInRect(bounds, toBitmapImageRep: bitmapRep) | |
let image = NSImage(size: bounds.size) | |
image.addRepresentation(bitmapRep) | |
return image | |
} | |
} |