bvanderveen

How even GPG

Good question. We'll assume a gpg2 install available at gpg.

Make a keypair

First you have to have a key-pair.

gpg --full-generate-key

bvanderveen

Some notions on making a simulator/control loop bench

With apologies to ML:

iteration :: setpoint -> system-state -> system-state
iteration sp sys = let 
    control-output = control (sp, sys.control-state, sys.dynamic-state)
    control-state' = fst control-output

control-signal = snd control-output

bvanderveen

First prepare your Mac for Developer Mode™.

• xcode-select --install (now all sorts of stuff works)
• Install homebrew

Install rbenv and use it to install a Ruby:

• brew install rbenv ruby-build
• echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
• rbenv install

bvanderveen

How I compiled libonion on OS X

First, deps.

$ brew install libev

Edit CMakeLists.txt and set the following to false:

• ONION_USE_PAM
• ONION_USE_PTHREADS

bvanderveen

2022 M1 Mac OS 10.12.5

Download OpenSSL 1.1.1q source.

Extract and change into source directory. Applied this workaround (should be fixed in next openssl release, "r").

$ mkdir /opt && chown -R veen:staff /opt
$ ./config --prefix=/opt/openssl-1.1.1q
$ make -j 4 && make install

bvanderveen

set terminal png
set output "plot.png"
set title "Cannon ball"
set key autotitle columnhead
set xlabel "Time"
set datafile separator ','

plot "output.csv" u 1:62 w lines

bvanderveen

// view model
self.figureOutWhatToShowNext = [RACCommand commandWithCanExecuteSignal:self.okayToShowNextThing];
self.nextVM = [[self.figureOutWhatToShowNext addSignalBlock:^ RACSignal *(id value) {
  return [self.model.figureItOut map:id (id x) { return x.boolValue ? [[OkayVM alloc] init] : [[NotOkayVM alloc] init] }];
] flatten];

// view

bvanderveen

    // from RichB, https://groups.google.com/forum/#!msg/kayak-http/ivzlD8HoF9w/7reCjodx2-AJ%5B1-25%5D

    
    class FileProducer : IDataProducer
    {

        // Members
        private string m_fileName;
        private FileStream m_fileStream;
        private IDataConsumer m_consumer;

bvanderveen

- (void) assertionIdeasLikeNUnit
{
    [Assert that:@"foobar" is:[Equal to:@"other"]];
    [Assert that:@"foobar" isNot:[Equal to:@"other"]];

    [Assert that:collection isAll:[Less than:@10]];
    [Assert that:collection isAll:[Less thanOrEqualTo:@10]];
    [Assert that:collection isAll:[Less thanOrEqualTo:@10]];
    [Assert that:collection isAll:[Greater than:@10]];
    [Assert that:collection isAll:[Greater thanOrEqualTo:@10]];

bvanderveen

int windowWidth;
int windowHeight;
float surfaceHeight = 50;

// sum should be 1
float kYaw = .5, kBrake = .5;

float[] mix(float pitch, float yaw, float roll, float brake) {
  float brakeSeparation = kBrake * (1 + brake) / 2;
  float yawMix = Math.max(kYaw, 1 - brakeSeparation);