chalup

sealed class RedBlackTree<E : Comparable<E>> {
    enum class Color { R, B }

    companion object {
        fun <T : Comparable<T>> emptyTree(): RedBlackTree<T> = Empty as RedBlackTree<T>
    }

    object Empty : RedBlackTree<Nothing>()
    data class Tree<E : Comparable<E>>(
        val color: Color,

chalup

[✓] Proguard - nothing blows up spectacularly during assemble gradle task

[✓] Proguard - make sure the primary dex file does not become bloated because of Kotlin

[✓] Proguard - stacktraces from Kotlin code can be easily deobfuscated

[✓] Proguard - stacktraces from Java code which is called from Kotlin code can be easily deobfuscated

[✓] compilation time - app can be built in finite amount of time (sidenote: this is quite tricky to assess - the compilation time might be a non-linear function of Kotlin code size; think hard if we can somehow make sure we won't have this issue in few months)

chalup

android {
  lintOptions {
    lintConfig file("lint.xml")
  }
}

chalup

<?xml version="1.0" encoding="UTF-8"?>
<lint>
    <issue id="NewApi" severity="fatal"/>
    <issue id="MissingSuperCall" severity="fatal"/>
    <issue id="UnusedResources" severity="fatal"/>
</lint>

chalup

import math

import numpy as np
from sklearn.neighbors import BallTree


class Optics:
    def __init__(self, eps, min_pts):
        self.eps = eps
        self.min_pts = min_pts

chalup

import java.io.Serializable;

public class Java8Wat {
  interface Parcelable {
  }

  static class Bundle implements Parcelable {
    public void put(Parcelable parcelable) {
    }

chalup

package com.futuresimple.base.provider;

import com.google.common.collect.Iterables;

import android.content.ContentResolver;
import android.database.ContentObservable;
import android.database.ContentObserver;
import android.database.Cursor;
import android.database.CursorWrapper;
import android.net.Uri;

chalup

  private static OkHttpClient getUnsafeOkHttpClient() {
    try {
      // Create a trust manager that does not validate certificate chains
      final TrustManager[] trustAllCerts = new TrustManager[] {
          new X509TrustManager() {
            @Override
            public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
            }

            @Override

chalup

package com.futuresimple.base.util;

import com.google.common.base.Predicate;
import com.google.common.collect.AbstractIterator;
import com.google.common.collect.Iterators;
import com.google.common.collect.PeekingIterator;

import java.util.Iterator;

public abstract class SkipWhile {

chalup

#ifndef PROPERTYHELPER_H
#define PROPERTYHELPER_H

#define PROPERTY_HELPER(type,name,getter,setter,signal) \
public: \
    type getter() const { return p_##name; } \
    void setter(type value) { \
        if (p_##name == value) return; \
        p_##name = value; \
        emit signal(value); \