fcanas

//
//  AVAsset+Catalog.swift
//  Micro Album
//
//  Created by Fabian Canas on 5/28/19.
//  Copyright © 2019 Fabian Canas. All rights reserved.
//

import AVFoundation
import MobileCoreServices

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import Foundation

class C {
    @NSCopying var copiedName: NSString?
    var noCopyName: NSString?
}

let f = NSMutableString(string: "First")

let obj = C()

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class C<T> {
    enum E {
        case c(T)
    }
    var e: E?
}

let o = C<Int>() // Crash : cyclic metadata dependency detected, aborting

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import UIKit

/*:
 # Ordering Matters in UIFontDescriptor
 Oct 21, 2017, iOS 11

 When creating a derived font descriptor with a font family, existing traits
 such as italic or bold are overwritten or ignored.
*/

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extension Sequence where Element: BinaryFloatingPoint {
    func average() -> Element {
        return abstractAverage(sequence: self, sum: +, div: /)
    }
}
extension Sequence where Element: SignedInteger {
    func average() -> Element {
        return abstractAverage(sequence: self, sum: +, div: /)
    }
}

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A swift playground experiment in making a Swift struct to JSON serialization.

The approach currently fails for arrays, but those can be handled much like dictionaries and optionals.

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@implementation NSData (HexString)

- (NSString *)hex_hexString {
    NSMutableString *out = [NSMutableString stringWithCapacity:self.length * 2];
    [self enumerateByteRangesUsingBlock:^(const void *bytes, NSRange byteRange, BOOL *stop) {
        for (NSUInteger i = 0; i < byteRange.length; i++) {
            [out appendFormat:@"%02x", ((unsigned char *)bytes)[i]];
        }
    }];
    return out;

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import Cocoa
import MapKit
import CompassOSX
import CoreGraphics

/*
// Elsewhere in the code, to initiate the trace action:

@IBAction func makeTrace(sender: AnyObject) {
        let traceView = MapTraceView()

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func squaredSame(a: [Int], b: [Int]) -> Bool {
    if a.count == 0 || b.count == 0 {
        return false
    }
    return Set(map(a, { $0 * $0 })) == Set(b)
}

let testResult = test(squaredSame)

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func encode(name :String) -> Int {
    return reduce(map(name.unicodeScalars) { Int($0.value) - 64 }, 1, *) % 47
}

func ride(group: String, comet: String) -> String {
    return encode(group) == encode(comet) ? "GO" : "STAY"
}

let testData = [
    ("COMETQ","HVNGAT","GO"),