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Claudio Kloss cfkloss

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@dodyg
dodyg / gist:5823184
Last active October 20, 2024 12:25
Kotlin Programming Language Cheat Sheet Part 1

#Intro

Kotlin is a new programming language for the JVM. It produces Java bytecode, supports Android and generates JavaScript. The latest version of the language is Kotlin M5.3

Kotlin project website is at kotlin.jetbrains.org.

All the codes here can be copied and run on Kotlin online editor.

Let's get started.

@staltz
staltz / introrx.md
Last active April 1, 2025 06:30
The introduction to Reactive Programming you've been missing
@mikelehen
mikelehen / generate-pushid.js
Created February 11, 2015 17:34
JavaScript code for generating Firebase Push IDs
/**
* Fancy ID generator that creates 20-character string identifiers with the following properties:
*
* 1. They're based on timestamp so that they sort *after* any existing ids.
* 2. They contain 72-bits of random data after the timestamp so that IDs won't collide with other clients' IDs.
* 3. They sort *lexicographically* (so the timestamp is converted to characters that will sort properly).
* 4. They're monotonically increasing. Even if you generate more than one in the same timestamp, the
* latter ones will sort after the former ones. We do this by using the previous random bits
* but "incrementing" them by 1 (only in the case of a timestamp collision).
*/
@iPaulPro
iPaulPro / include_list_viewpager.xml
Last active March 7, 2024 11:13
CollapsingToolbarLayout with TabLayout
<?xml version="1.0" encoding="utf-8"?><!--
~ Copyright (C) 2015 The Android Open Source Project
~
~ Licensed under the Apache License, Version 2.0 (the "License");
~ you may not use this file except in compliance with the License.
~ You may obtain a copy of the License at
~
~ http://www.apache.org/licenses/LICENSE-2.0
~
~ Unless required by applicable law or agreed to in writing, software
function Add-EnvPath {
param(
[Parameter(Mandatory=$true)]
[string] $Path,
[ValidateSet('Machine', 'User', 'Session')]
[string] $Container = 'Session'
)
if ($Container -ne 'Session') {
@neuni
neuni / openvpn_on_google_cloud.md
Created February 28, 2017 13:34
Create a openVPN server on Google Cloud Platform to connect to your Google Cloud network using openVPN and/or to route your internet traffic through the VPN (Road Warrior Scenario)

Install openVPN server on Google Cloud using Pritunl

Purpose:

Create a openVPN server on Google Cloud Platform to connect to your Google Cloud network using openVPN and/or to route your internet traffic through the VPN (Road Warrior Scenario)

Create instance

  • Create new instance in default network
  • Chosse Ubuntu 16.04 LTS
import 'package:flutter/material.dart';
import 'dart:math' as math;
import 'dart:async';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
@rodydavis
rodydavis / nativepicker.dart
Last active June 30, 2018 01:27
In Flutter show a Drop Down for Android and a Picker for iOS
import 'dart:io';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:my_unify_mobile/custom/native_widgets.dart';
class ExamplePickerPage extends StatefulWidget {
@override
ExamplePickerPageState createState() => ExamplePickerPageState();
}
@slightfoot
slightfoot / always_scrollbar.dart
Created March 4, 2019 18:20
Always Visible Scrollbar for Flutter - 4th March 2019
import 'package:flutter/gestures.dart' show DragStartBehavior;
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
void main() {
runApp(
MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData(
primaryColor: Colors.indigo,
@filiph
filiph / main.dart
Last active September 11, 2019 00:52
Implementation of the ring of circles in Flutter. Initial inspiration: https://twitter.com/InfinityLoopGIF/status/1101584983259533312. Kotlin implementation: https://gist.github.com/alexjlockwood/e3ff7b9a05dd91ff0955b90950bf7ee5
import 'package:flutter/material.dart';
import 'package:ring_of_circles/src/widget.dart';
/// Just the app. Nothing to see here, except the code for changing
/// the number of circles (`n`).
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {