jverkoey

// A NINetworkImageView is a subclass of UIImageView. We can provide an image to the initializer
// and it will be displayed until the network image is loaded. In this example we won't set an
// initial image.
NINetworkImageView* imageView = [[NINetworkImageView alloc] initWithFrame:CGRectZero];
imageView.autoresizingMask = UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleBottomMargin;

// We don't set an initial image so let's create a nice-looking "frame" effect on the view.
// This will show a translucent background with a highlighted border.
imageView.backgroundColor = [UIColor colorWithWhite:1 alpha:0.2];
imageView.layer.borderColor = [UIColor colorWithWhite:1 alpha:0.1].CGColor;

jverkoey

[NIInterapp phone]; // Open the Phone app
[NIInterapp phoneWithNumber:@"555-0102"]; // Make a call

NIMailAppInvocation* invocation = [NIMailAppInvocation invocation];
invocation.recipient = @"jverkoey@gmail.com";
invocation.subject = @"Nimbus made me do it!";
[NIInterapp mailWithInvocation:invocation];

// Open Twitter with the composer and a given message.
[NIInterapp twitterWithMessage:@"I'm playing with the Nimbus sample apps! http://nimbuskit.info"];

jverkoey

const char* cstr = [string UTF8String];

void* anon = mmap(0, sizeof(char) * (string.length + 1), PROT_WRITE|PROT_READ, MAP_ANON|MAP_PRIVATE, 0, 0);
if (anon == MAP_FAILED) {
  NSLog(@"Failed to map memory.");
  return;
}
strcpy(anon, cstr);

// How do I get a file descriptor for use here?

jverkoey

//
// Copyright 2013 Jeff Verkoeyen
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software

jverkoey

- (CGSize)sizeOfContentsWithSize:(CGSize)size
                    shouldLayout:(BOOL)shouldLayout {
  // Calculate frames.

  if (shouldLayout) {
    // Update frames.
  }

  return // size
}

jverkoey

# format:
# --------------
# date (mm/dd/yy)
# assignment
# assignment
# ...
#
# date
# assignment
# ...

jverkoey

// Add this to your app delegate.

// Neither `UINavigationController` nor `UITabBarController` have the slightest decency to ask their
// visible view controller whether IT would like to rotate and just go on and do whatever the hell
// they please. This'll show 'em.
- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
  UIViewController* topViewController = window.rootViewController;

  do {
    // Navigate modal controllers.

jverkoey

// A quick-and-dirty implementation of Newton's method. Could use some tlc. May loop infinitely for certain inputs.

typedef CGFloat (^CalculateEquationBlock)(CGFloat x);

CGFloat NIFindRoot(CalculateEquationBlock fn, CalculateEquationBlock fndx, CGFloat guess) {
  CGFloat root = guess;
  while (1) {
    CGFloat newRoot = root - fn(root) / fndx(root);
    if (fabsf(newRoot - root) < 0.001) { // or whatever epsilon you want
      return newRoot;

jverkoey

// NOTE: I've decided to use a much simpler approach to this as the complexity was starting to consume
// too much energy. Leaving this here for historical context.

// Building an Underdamped Harmonic Oscillator
//
// All equations derived from this wonderful paper by David Morin:
// http://www.people.fas.harvard.edu/~djmorin/waves/oscillations.pdf
//
// Note on mass: In order to simplify our calculations I'll assume that mass (m) is always 1. Where
//               m would otherwise be written I've folded it into the expression.

jverkoey

Keybase proof

I hereby claim:

• I am jverkoey on github.
• I am featherless (https://keybase.io/featherless) on keybase.
• I have a public key whose fingerprint is F94C 449D 7054 635A 03FE BE95 A674 C56D 3DD7 D554

To claim this, I am signing this object: