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ldt25290 / Careful With “Singleton” Lookalikes episode.swift

Created August 20, 2020 15:16 — forked from caiozullo/Careful With “Singleton” Lookalikes episode.swift

Careful With “Singleton” Lookalikes episode

	//
	// Copyright © 2018 Essential Developer. All rights reserved.
	//

	import UIKit

	/*
	The Singleton design pattern is intended to enforce
	a class has only one instance.

ldt25290 / CustomSpinner

Created August 17, 2018 11:41 — forked from medhdj/CustomSpinner

A custom Spinner with opened and closed event, you can use it to perform some UI changes on the Spinner for example


	import android.content.Context;
	import android.util.AttributeSet;
	import android.widget.Spinner;

	public class CustomSpinner extends Spinner {
	// private static final String TAG = "CustomSpinner";
	private OnSpinnerEventsListener mListener;
	private boolean mOpenInitiated = false;

ldt25290 / gist:5b123b609cd5763096dcd3ee23c3abd8

Created November 10, 2016 18:36 — forked from boujeepossum/gist:4217737

MongoDB M101 HW Week 5

	// HW 5.1

	db.posts.aggregate([
	{$project: {_id: 0,'comments.author':1}},
	{$unwind: '$comments'},
	{$group: {_id: '$comments.author', n: {$sum: 1}}},
	{$sort: {n: -1}},
	{$limit: 1}
	])