MattFoley

- (Class)expectedClassForObject:(NSManagedObject *)object andKey:(id)key
{
    NSDictionary *attributes = [[object entity] attributesByName];
    NSAttributeDescription *attributeDescription = [attributes valueForKey:key];
    NSString *className = [attributeDescription attributeValueClassName];
    if (!className) {
        const char *className = [[object.entity managedObjectClassName] cStringUsingEncoding:NSUTF8StringEncoding];
        const char *propertyName = [key cStringUsingEncoding:NSUTF8StringEncoding];
        
        Class managedObjectClass = objc_getClass(className);

MattFoley

 cd $(brew --prefix)
 git checkout b3fd8f3 /usr/local/Library/Formula/rabbitmq.rb
 brew install rabbitmq

MattFoley

##Various React Native Things

This gist will hold all of the fun/useful React Native links we find.

###Tutorials

• Installing React Native from Scratch - Walkthrough for installing RN and it's dependencies when you're just a simple ObjC dev like me.
• Egghead React Native Course - Full course on React Native
• Ray Wenderlich Property Finder Tutorial - Great tutorial to follow after picking up some JS basics.

###Tools

• Nuclide IDE - React Native focused IDE, not yet released

MattFoley

//Rather than defining containerRow as multiple hard coded elements:
containerRow { 
	backgroundcolor: #ffffff,
	opacity 90%,
	dropshadow: 4px color: #000000,
	corner-radius: 10pt,
 }

//We define those one use elements as classes, very simple building blocks:
containerCornerRadiusPrimary: {

MattFoley

Steps to upgrade to React Native head

1. Delete your Derived Data and node_modules folders

2. Reboot your computer dangling symlink

3. Install io.js.

   nvm install iojs nvm alias default iojs

4. Update brew

MattFoley

//RN attempts this @ ln686 of RCTConvert.m, imageWithContentsOfFile fails to load the image.
(lldb) po [UIImage imageWithContentsOfFile:@"file:///Users/tfallon/Library/Developer/CoreSimulator/Devices/E2A18017-6069-45C6-BFB2-814E62A3F6DA/data/Containers/Data/Application/3A2FBAD8-BCC9-417E-8644-FAD4551A681C/tmp/genImageFile.png"]
 nil
 
//Image is loaded when I attempt this at a breakpoint on the same line.
(lldb) po [UIImage imageWithContentsOfFile:@"Users/tfallon/Library/Developer/CoreSimulator/Devices/E2A18017-6069-45C6-BFB2-814E62A3F6DA/data/Containers/Data/Application/3A2FBAD8-BCC9-417E-8644-FAD4551A681C/tmp/genImageFile.png"]
<UIImage: 0x7f9f9a41cef0>, {90, 90}

MattFoley

#define screenHeight()      ([UIScreen mainScreen].bounds.size.height)

#define isPhoneFive()       (screenHeight() == 568)

#define isOS6()             ([[[UIDevice currentDevice] systemVersion]intValue] > 5.2)

#define UIInterfaceIdiomIsPad() (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

#define UIColorFromRGB(rgbValue) [UIColor \
colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 \

MattFoley

    NSMutableArray *objects = [@[] mutableCopy];
    NSObject *someObject = [NSObject new];
    objects[objects.count] = object;

MattFoley

- (void)removeShadows
{
    self.opaque = NO;
    self.backgroundColor = [UIColor clearColor];
    for(UIView *view in self.subviews){
        if ([view isKindOfClass:[UIImageView class]]) {
            [view removeFromSuperview];
        }
        
        if ([view isKindOfClass:[UIScrollView class]]) {

MattFoley

//Function to convert RGB values into Hexadecimal/Base16
#define UIColorFromRGB(rgbValue) [UIColor \
colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 \
green:((float)((rgbValue & 0xFF00) >> 8))/255.0 \
blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]