JimRoepcke

/*
In Xcode 11.3.1, the output is:

>>> setting n to -1
    sending value through valueDidChange publisher
    situation negative("hello")
<<< done
>>> setting n to 1
    sending value through valueDidChange publisher
    situation positive("hello")

JimRoepcke

/*
In Xcode 11.3.1, the output is:

>>> setting n to -1
    sending value through valueDidChange publisher
    situation negative("hello")
<<< done
>>> setting n to 1
    sending value through valueDidChange publisher
    situation positive("hello")

JimRoepcke

enum Bar: String {
    case a, b, c
    init?(w: Bool, x: Bool, y: Bool, z: Bool) {
        if w {
            if x {
                self = .a
                return
            } else if y {
                self = .b
                return

JimRoepcke

//: Playground - noun: a place where people can play

protocol Thingy: class {}

protocol ThingTaking: class {
    associatedtype ThingType: Thingy

    func some(thing: ThingType)
}

JimRoepcke

- (UIImage *)mergeImages:(NSArray *)images
{
    return nil; // hand waving
}

- (void)exampleWorkspace
{
    [KZNNodeType registerType:@"MergeImages" inputs:@{@"Images<T>": NSArray.class, @"<T>": UIImage.class} outputs:@{@"Output" : UIImage.class} processingBlock:^(id node, NSDictionary *inputs, NSMutableDictionary *outputs) {
        outputs[@"Output"] = [self mergeImages:inputs[@"Images"]];

JimRoepcke

// Playground - noun: a place where people can play

import Cocoa

struct Regex {
    let pattern: String
    let expressionOptions: NSRegularExpressionOptions
    let matchingOptions: NSMatchingOptions
    
    init(pattern: String, expressionOptions: NSRegularExpressionOptions, matchingOptions: NSMatchingOptions) {

JimRoepcke

- (BOOL)incrementBuildNumberInFile:(NSURL *)fileURL error:(NSError **)error
{
    BOOL result = NO;
    static NSString * const sErrorDescription = @"Unrecognized File Format";
    static NSString * const sBuildNumberKey = @"BuildNumber";
    NSError *localError = nil;

    NSData *fileData = [NSData dataWithContentsOfURL:fileURL options:0 error:&localError];
    if (fileData)

JimRoepcke

for match in $(grep -lR uniqueIdentifier *); do printf "File:%s\n\n" $match; otool -v -s __TEXT __objc_methname $match | grep uniqueIdentifier; printf "\n\n"; done; - See more at: http://www.doubleencore.com/2013/06/tutorial-finding-calls-to-uniqueidentifier-in-your-ios-app/#sthash.kV1BoNc0.dpuf

JimRoepcke

Last night the developer site went offline. It should come as no surprise that this immediately sent many people into panic mode thinking WWDC tickets would be available when the site came back online.

I didn't get to go to WWDC last year because tickets went on sale while I was sleeping, so this year I've signed up for every service I can find to tell me when tickets go on sale, and I run scripts to check the WWDC site. Everyone knows that if WWDC is capped at 5K tickets as it has been, they'll sell out in record time this again year.

You guys are just as aware of this as the rest of us are.

And yet, despite knowing that tickets weren't going to be for sale when the site returned, you chose not to communicate this to the thousands of Apple developers on Twitter that had become chained to their computers last night in anticipation.

This is totally disrespectful. I understand why ticket sales aren't pre-announced, but please don't make this any worse than it has to be. If you're going to take the site offl

JimRoepcke

// In MyViewController.m

@interface BaseModelClass (MyViewControllerLayout)

// If your model classes don't have a common superclass, put
// this category on NSObject instead

- (void)layoutForMyViewController:(MyViewController *)controller;

@end