Padding strings in Kotlin for calendar weeks

val calendarWeek = 3
val calendarWeekString = calendarWeek.toString().padStart(2, '0')

January 7, 2021January 7, 2021

Good Reads – Gute Bücher

Die Gesetze der Gewinner: Erfolg und ein erfülltes Leben – Bodo Schäfer

Die 4-Stunden-Woche: Mehr Zeit, mehr Geld, mehr Leben – Tim Ferriss

Ich zeige Dir wie Du reich wirst: Das einzigartige 6-Wochen-Programm, das wirklich funktioniert – Ramit Sethi

Bullet Journal Method

Atomic Habits

October 21, 2020December 13, 2020

Clean Personal Finance

The Grades

I’ve stolen this concept from the Clean Code Developer initiative.

https://clean-code-developer.com/grades/

The main idea is that you don’t try every financial advice all at once but organize it into different stages from easy to hard. Continue reading “Clean Personal Finance”

July 21, 2020October 21, 2020

Curated List of Management Literature

James Clear

Atomic Habits

Continue reading “Curated List of Management Literature”

June 29, 2020

Sound and music with pygame

pip install pygame

Sound

import pygame

if __name__ == '__main__':
    pygame.mixer.init()
    sound = pygame.mixer.Sound("./sound.wav")
    channel = sound.play()
    while channel.get_busy():
        pygame.time.wait(100)
        print("Playing...")
    print("Finished.")

Music

import pygame

if __name__ == '__main__':
    pygame.mixer.init()
    pygame.mixer.music.load("./sound.mp3")
    pygame.mixer.music.play()
    while pygame.mixer.music.get_busy():
        pygame.time.wait(100)  # ms
        print("Playing...")
    print("Finished.")

June 22, 2020

Getting Location Info in Android

Manifest

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

Activity

public static final int REQUEST_CODE = 123;
LocationManager mLocationManager; 
LocationListener mLocationListener;

@Override
protected void onResume(){
    super.onResume();
    getCurrentLocation();
}

private void getCurrentLocation() {
    Log.d("Clima", "getWeatherForCurrentLocation");
    mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    mLocationListener = new LocationListener() {
        @Override
        public void onLocationChanged(Location location) {
            Log.d("Clima", "onLocationChanged");
            String longitude = String.valueOf(location.getLongitude());
            String latitude = String.valueOf(location.getLatitude());
            Log.d("Clima", "longitude is: " +longitude);
            Log.d("Clima","latitude is: " + latitude);
        }

        @Override
        public void onStatusChanged(String s, int i, Bundle bundle) {

        }

        @Override
        public void onProviderEnabled(String s) {

        }

        @Override
        public void onProviderDisabled(String s) {

        }
    };
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
            && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_CODE);
        return;
    }
    mLocationManager.requestLocationUpdates(LOCAION_PROVIDER, MIN_TIME, MIN_DISTANCE, mLocationListener);
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    Log.d("Clima", "onRequestPermissionsResult");
    if (requestCode == REQUEST_CODE) {
        if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
            getCurrentLocation();
        }
    }
}

June 17, 2020

Passing data between AndroidActivities

Sending data

private void openVideoActivity(String video) {
    Intent newActivity = new Intent(this, PlayerActivity.class);
    newActivity.putExtra("videoId", video);
    startActivity(newActivity);
}

Retrieving data

final String videoID = getIntent().getExtras().getString("videoID");

June 8, 2020

Python variable length arguments

def print_person_varargs(name, *vargs):
    print(name)
    print(vargs)
    for arg in vargs:
        print(arg)


def print_person_kwargs(name, **kwargs):
    print(name)
    print(kwargs)
    for i, j in kwargs.items():
        print(i, j)


print_person_varargs("Jörn", 38, "Emskirchen")
print_person_kwargs("Jörn", age=38, city="Emskirchen")

June 8, 2020June 9, 2020

Introduction to the Julia programming language

Installation

You can download the installer at https://julialang.org/

On Windows you have to set the path manually, e.g. C:\Julia-1.3.1\bin

Let’s fire up a command line and type: julia

You will be greeted with a nice little ascii art and the prompt.

If You want to close the prompt You can use CTRL + D Continue reading “Introduction to the Julia programming language”