DonMag

let sourceImage = UIImage(named: "swift1.png")
let maskImage = UIImage(named: "mask1.png")

let maskImageRef = maskImage!.CGImage
let sourceImageRef = sourceImage!.CGImage

let mask = CGImageMaskCreate(CGImageGetWidth(maskImageRef),
	CGImageGetHeight(maskImageRef),
	CGImageGetBitsPerComponent(maskImageRef),

DonMag

struct SomeObject {
	var variable: String?
	
	init() {
		self.variable = "test"
	}
}

var j = 1

DonMag

do {
	let jsonDict = try NSJSONSerialization.JSONObjectWithData(fileContents!, options: []) as! NSDictionary
	if let features = jsonDict["features"] as? [Dictionary<String, AnyObject>] {
		
		
		// try this
		var oneFeature = features[0]["geometry"]!["coordinates"]!![0][3]

		

DonMag

import Cocoa

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {

    // local variable reference so we can call funcs in ViewController class
    var vc: ViewController?

    @IBAction func click(sender: NSMenuItem) {

DonMag

//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@end

DonMag

			var v1: UIView

			// this seems ok?
			guard let vvv = UINib(nibName: "SampleView", bundle: nil).instantiateWithOwner(nil, options: nil)[0] as? UIView else { return }
			v1 = vvv


			// but this won't compile?
			guard v1 = UINib(nibName: "SampleView", bundle: nil).instantiateWithOwner(nil, options: nil)[0] as? UIView else { return }

DonMag

#import <UIKit/UIKit.h>

IB_DESIGNABLE
@interface BorderedButton : UIButton

- (void)setCornerRadius:(CGFloat)cornerRadius;
- (void)setBorderWidth:(CGFloat)borderWidth;
- (void)setBorderColor:(UIColor *)borderColor;

DonMag

//var myViews = self.view.subviews where ("some way to say subview-type is UIButton")

var myViews = self.view.subviews.flatMap{ $0 as? UIButton }   // thanks bhargavg !!!

// next task: get a sub-array based on object properties?

//var myViews = self.view.subviews.flatMap{ $0 as? UIButton "where $0.backgroundColor == UIColor.yellowColor()" }

// this works - thanks DrYucatan

DonMag

// ugly "stretched" image
	UIImage* image = [UIImage imageNamed:@"btn.png"];
	[_theButton setBackgroundImage:image forState:UIControlStateNormal];

// nice "stretchable" image
	UIImage* image = [UIImage imageNamed:@"btn.png"];
	UIEdgeInsets insets = UIEdgeInsetsMake(8, 8, 8, 8);
	image = [image resizableImageWithCapInsets:insets];
	[_theButton setBackgroundImage:image forState:UIControlStateNormal];

DonMag

I need a RegEx...

All lines which:
  DO CONTAIN "Created by"
but
  DO NOT CONTAIN "Don" or "Joe" or "Bob"
  
So, for the following lines: