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Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

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General rules

1. Follow standard conventions.
2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
3. Boy scout rule. Leave the campground cleaner than you found it.

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// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4 <= 0.9;

/** 
 * @title Gehirn von Thomas Wenzlaff
 * @dev Mein Smart Contract mit solidity zum Speichern von IQ auf der Blockchain
 */
contract Gehirn {
    

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[user]
        email = email@nospam.de
        name = Vorname Nachname
        
[alias]
    tree = log --graph --oneline --all
    br = branch
    unstage = reset HEAD --
    last = log -1 HEAD
    aa = add --all

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package de.wenzlaff.ubidots;

import com.ubidots.Variable;

/**
 * CSV Objekt für Variablen von Ubidots.
 * 
 * @author Thomas Wenzlaff
 *
 */

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package de.wenzlaff.ubidots;

import java.util.ArrayList;
import java.util.List;

import com.ubidots.ApiClient;
import com.ubidots.DataSource;
import com.ubidots.Variable;

/**

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package de.wenzlaff;

import static io.restassured.RestAssured.given;
import static org.hamcrest.CoreMatchers.is;

import org.junit.jupiter.api.Test;

import io.quarkus.test.junit.QuarkusTest;

@QuarkusTest

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package de.wenzlaff;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("/v1")
public class CO2AmpelResource {

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package de.wenzlaff;

import java.time.LocalDateTime;

import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
import org.eclipse.paho.client.mqttv3.MqttCallback;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.json.JSONArray;

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package corona;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.Charset;

import org.apache.commons.io.IOUtils;
import org.json.JSONException;
import org.json.JSONObject;

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import java.io.IOException;
 
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
 
/**
 * Beispiel Abfrage Coronavirus vom RKI.