zachwaugh

import SwiftUI

// Sample app to reproduce ShareLink bug from a sheet
// 1. Run app, tap "Present Modal Sheet"
// 2. Try to Share from the sheet
// 3. It won't present and you'll see an error in the console:
//    Attempt to present <UIActivityViewController: 0x102820000> on <_TtGC7SwiftUI19UIHostingControllerGVS_15ModifiedContentVS_7AnyViewVS_12RootModifier__: 0x102020e00> (from <_TtGC7SwiftUI32NavigationStackHostingControllerVS_7AnyView_: 0x103829a00>) which is already presenting <_TtGC7SwiftUI29PresentationHostingControllerVS_7AnyView_: 0x10202a800>.
// 4. Comment out the .confirmationDialog line and it works
// 5. Move .confirmationDialog before .sheet and it works

zachwaugh

# I rarely use make, probably a better way to do some/all of this?

SDK=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk
SOURCES=main.swift
EXECUTABLE=main

all:
	swiftc -sdk $(SDK) $(SOURCES) -o $(EXECUTABLE)

clean:

zachwaugh

func printFonts() {
    println("--- Installed fonts ---")
    let families = sorted(UIFont.familyNames() as! [String]) { $0 < $1 }

    for family in families {
        println("family: \(family)")
            
        let fonts = UIFont.fontNamesForFamilyName(family)
        for font in fonts {

zachwaugh

// Can currently do this
func titleForSection1(section: Int) -> String? {
  switch section {
  case 0: return "Foo"
  case 1: return "Bar"
  default: return nil
  }
}

// But I want to do this to remove the redundant returns

zachwaugh

A hopefully accurate list of iOS compatibility per device

iOS 13

iOS 12

iOS 11

zachwaugh

#import <Foundation/Foundation.h>

// Experimental improvement to NSDictionaryOfVariableBindings where keys are simplified to remove underscores and "self." prefixes
// so you can use the simple version within the VFL string
//
// Example:
//
// [NSLayoutConstraint constraintsWithVisualFormat:@"|-[_foo]-[self.bar]-[baz]" options:0 metrics:nil views:NSDictionaryOfVariableBindings(_foo, self.bar, baz)];
// -> this doesn't work, gives an error about "self."
// 

zachwaugh

Keybase proof

I hereby claim:

• I am zachwaugh on github.
• I am zachwaugh (https://keybase.io/zachwaugh) on keybase.
• I have a public key whose fingerprint is 6B46 CDCF BBD4 4006 97C2 0D7A 70CA 12E6 82A9 D4C6

To claim this, I am signing this object:

zachwaugh

// static var to store shared date formatter
static NSDateFormatter *_formatter = nil;

@implementation NSDate (Extras)

// Simple comparison, create a string from today and date, see if they're the same
- (BOOL)isToday
{
  // Lazy load and cache formatter, date formatters are slow to init
  if (!_formatter)

zachwaugh

// [image writeToFile:[NSURL fileURLWithPath:@"/some/path/image.png"]];
- (void)writeToFile:(NSURL *)fileURL
{
  NSBitmapImageRep *bitmapRep = nil;
  
  for (NSImageRep *imageRep in [self representations])
  {
    if ([imageRep isKindOfClass:[NSBitmapImageRep class]])
    {
      bitmapRep = (NSBitmapImageRep *)imageRep;

zachwaugh

- (UIImage *)imageWithMask:(UIImage *)maskImage andIsWhite:(BOOL)isWhite
{
  CGRect imageRect = CGRectMake(0, 0, maskImage.size.width, maskImage.size.height);
  CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
  CGContextRef ctx = CGBitmapContextCreate(NULL, maskImage.size.width, maskImage.size.height, 8, 0, colorSpace, kCGImageAlphaPremultipliedLast);
  
  CGContextClipToMask(ctx, imageRect, maskImage.CGImage);
  if (isWhite) {
    CGContextSetRGBFillColor(ctx, 1, 1, 1, 1);
  } else {