bgerstle

Learn AFT Tutorial Notes

Followed this guide: https://developer.hashicorp.com/terraform/tutorials/aws/aws-control-tower-aft

Takeaways

• Choosing a different region than tutorial (us-east-2) will confuse you because clicking links from the tutorial will put you on an empty page (e.g. looking for codepipelines)
• Navigating the account hierarchy is confusing
  • Which account has control tower? (AFT management)
• How do I login? (AWS Access Portal)

bgerstle

module ExhaustiveEnum
  def self.included(base)
    base.extend(ClassMethods)
  end

  module ClassMethods
    def switch(value, &block)
      matcher = ExhaustiveMatcher.new(self)
      matcher.match(value, &block)
    end

bgerstle

Gen(unGen: { r, n in
    let splitGen: () -> StdGen = {
        var g: StdGen = r.split.0
        return {
            g = g.split.0
            return g
        }
    }()
    
    let Foo = Foo()

bgerstle

// a bunch of requires & tiny helper fns...

function directoriesAtPath(path) {
  return fs.readdir(dir)
           .then(fp.map(appendToParentDir))
           .then(zipPathsWithStats)
           .then(mapWithoutNil(pathIfTupleIsDirectory));
};

bgerstle

import Foundation
import CoreLocation
let l = CLLocation(latitude: 0, longitude: 0)
let data = NSKeyedArchiver.archivedDataWithRootObject(l)
let lprime = NSKeyedUnarchiver.unarchiveObjectWithData(data) as! CLLocation
l == lprime
// $R0: Bool = false
l.description
// $R2: String = "<+0.00000000,+0.00000000> +/- 0.00m (speed -1.00 mps / course -1.00) @ 2/29/16, 12:34:25 PM Eastern Standard Time"
lprime.description

bgerstle

App Thinning Size Report for All Variants of Wikipedia

Variant: Wikipedia-iPhone 6.ipa
Supported devices: iPhone 6
App + On Demand Resources size: 7 MB compressed, 18.1 MB uncompressed
App size: 7 MB compressed, 18.1 MB uncompressed
On Demand Resources size: Zero KB compressed, Zero KB uncompressed

bgerstle

    func testSDWebImageDownloaderOperationThreadSafety() {
        NSURLProtocol.registerClass(WMFHTTPHangingProtocol)
        defer {
            NSURLProtocol.unregisterClass(WMFHTTPHangingProtocol)
        }

        [0...1000].forEach { _ in
            let downloadOperation = SDWebImageDownloaderOperation(
                request: NSURLRequest(URL: NSURL(string: "https://test.org/foo")!),
                options: [],

bgerstle

- (int)exampleA {
  if (foo) {
    return 1;
  }

  // no man's land for side effects
 
  if (bar) {
    return 2;
  }

bgerstle

import UIKit

public protocol CellContainer {
    var visibleCells: [NSIndexPath] { get }
}

public protocol CollectionViewContainer {
    var collectionView: UICollectionView? { get }
}

bgerstle

2015-10-13 18:20:28.865 Wikipedia Debug[976:36527763] *** Assertion failure in -[UICollectionView _endItemAnimationsWithInvalidationContext:tentativelyForReordering:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit_Sim/UIKit-3505.16/UICollectionView.m:3936
2015-10-13 18:20:28.879 Wikipedia Debug[976:36527763] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'attempt to delete and reload the same index path (<NSIndexPath: 0xc000000000000016> {length = 2, path = 0 - 0})'
*** First throw call stack:
(
	0   CoreFoundation                      0x000000010b694f65 __exceptionPreprocess + 165
	1   libobjc.A.dylib                     0x000000010b10edeb objc_exception_throw + 48
	2   CoreFoundation                      0x000000010b694dca +[NSException raise:format:arguments:] + 106
	3   Foundation                          0x0000000108851ae2 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 198
	4   UIKit                               0x0000