tstone

Pry Cheat Sheet

• Youtube Tutorial 2013

Command Line

• pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
• pry -r ./config/environment.rb - load your rails into a pry session

pry-nav

tstone

package com.collidermodular.util;

public class Timer {
  private final double samplesPerMs;
  private final Runnable runnable;

  private double duration;
  private double sampleCounter;
  private double targetSampleCount;
  private boolean active;

tstone

package com.collidermodular.core;

public interface Host {
  public double getSampleRate();
  public double getSamplesPerMs();
  public double getMsPerSample();
  public double getTempo();
}

public interface ValueSource {

tstone

// Based on the "3.3 Naive lowpass filter" 1-pole filter from:
// https://www.native-instruments.com/fileadmin/ni_media/downloads/pdf/VAFilterDesign_2.1.2.pdf
// https://www.youtube.com/watch?v=zPzCLqkQnr0

class OnePoleLowPass {
  private double cutOff; // unit: rads per sample
  private double z = 0.0;
  
  final double samplesPerSec = Values.SamplesPerMs * 1000;
  final double twoPi = 2 * Math.PI;

tstone

class A
  @value = "a"

  def self.print
    puts @value
  end
end

class B < A
  @value = "b"

tstone

module.exports = {
  A: {
    hello: function() {
      return 'hello';
    }
  }
}

tstone

	; INES header
	.inesprg 1	; how many program banks
	.ineschr 1	; how many picture banks
	.inesmap 0	; mapper 0
	.inesmir 1	; mirror to 1

	.bank 1		; bank 1
	.org $FFFA	; start address
	.dw 0		; dw = define word!
	.dw Start	; give address of start of our code for rest of NES

tstone

package services.config

import scala.concurrent.Future
import scala.reflect.runtime.universe._


trait ReflectedAttributes {
  protected val instanceMirror = runtimeMirror(this.getClass.getClassLoader).reflect(this)
  protected val members = instanceMirror.symbol.typeSignature.members

tstone

trait Person
class Manager extends Person
class Engineer extends Person

val people = Seq(new Engineer, new Manager)
people.map(_.toJson)

// PROBLEM:  Implicit lookup is for a Writes[Person], not a Writes[Engineer] and Writes[Manager]

tstone

// long-hand boilerplate:

case class ExampleParams(foo: String, bar: String, baz: String) extends Params {
  def withFoo(value: String) = this.copy(foo = value)
  def withBar(value: String) = this.copy(bar = value)
  def withBaz(value: String) = this.copy(baz = value)
}