bjhomer

import Foundation


let str = "abXcdXefXg"

let start = str.startIndex
var searchStart = start

while let xRange = str.range(of: "X", range: searchStart..<str.endIndex) {
    searchStart = xRange.upperBound

bjhomer

func doThing(x: Int, y: Int, z: Int) -> Int {
    return x + y + z
}

class Foo {   
    func doThing(x: Int) {
        doThing(x: x, y: 2, z: 4) // extra argument 'y' in call
    }
}

bjhomer

# The following WWDC information is based on the initial redacted WWDC
# schedule posted each year. Session counts generally change a bit
# each year as the conference draws closer, but these numbers are
# close enough for a rough estimate.
# 
# While session names and descriptions are redacted, the underlying 
# data still includes information about which platforms they target. 
# This allows us to do a bit of comparative analysis. These numbers
# are for "sessions" only -- Keynote, "Get Togethers", Labs, etc. have
# been excluded.

bjhomer

Using the Day One CLI with Day One 2

The dayone command line tool was originally written to work with Day One Classic, and by default writes its entries to the default Day One Classic journal directory¹. If you want to use the dayone tool to write entries in to Day One 2 instead, there are a couple options.

---

Option 1. Use this option if you don't use Day One Classic at all.

bjhomer

// ObjC

+ (id)modelOfClass:(Class)modelClass fromJSONDictionary:(NSDictionary *)JSONDictionary; // DEPRECATED
+ (id)modelOfClass:(Class)modelClass fromJSONDictionary:(NSDictionary *)JSONDictionary error:(NSError **)error;

bjhomer

class MyClass: NSObject {
    var loggingProperty: String {
        let selector = #selector(MyClass.loggingProperty)  //  error: instance member 'loggingProperty' cannot be used on type 'MyClass'
        print("accessing", selector)
        return "Hello"
    }
}

bjhomer

// Usage: echo "these are some words" | words

// Output:
// these
// are
// some
// words

import Foundation
import Swift

bjhomer

#import <Foundation/Foundation.h>

// This is pretty simple, right?
typedef void(^SampleBlock)(NSString *str);

bjhomer

class Top {
    let x: Int
    init() { x = 3; println("Top.init") }
}

class Bottom: Top {
    var z: String
    
    // This doesn't call `super.init`, but Top.init still runs. Why?
    init(dummy: Bool) { z = "hi" }

bjhomer

import Cocoa

func curry<A, B, C> ( f: (A, B) -> C ) -> (A -> B -> C) {
    return { x in
        return { y in
            return f(x, y)
        }
    }
}