maumorales

The provided TypeScript code defines a utility type RecursivePartial. This type is used to create a version of an existing type, but with all of its properties (and their nested properties) made optional and able to be partially provided.

The RecursivePartial type is defined as a mapped type that iterates over all properties (Prop) of a given type (Type):

export type RecursivePartial<Type> = {
  [Prop in keyof Type]?: ...
};

Array

Introduction

The default version of java provided in the latest raspbian images are outdated, so we are going to install from the ppa:webupd8team/java repository instead. Please note that add-apt-repository ppa:webupd8team/java will not work, so we will need to add the repository manually.

Installation

Create the gpg key file and paste the following lines of text below

nano key.txt

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.

General rules

Follow standard conventions.
Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
Boy scout rule. Leave the campground cleaner than you found it.
Always find root cause. Always look for the root cause of a problem.

Design rules

Useful Pandas Snippets

A personal diary of DataFrame munging over the years.

Data Types and Conversion

Convert Series datatype to numeric (will error if column has non-numeric values)
(h/t @makmanalp)

	<!DOCTYPE html>
	<html>
	<head>
	<script>
	var data
	var formId = 'form'

	function drawForm() {
	if (!data) return
	var outputEl = document.getElementById(formId);

	# List unique values in a DataFrame column
	df['Column Name'].unique() # Note, `NaN` is included as a unique value. If you just want the number, use `nunique()` which stands
	# for 'number of unique values'; By default, it excludes `NaN`. `.nunique(dropna=False)` will include `NaN` in the count of unique values.

	# To extract a specific column (subset the dataframe), you can use [ ] (brackets) or attribute notation.
	df.height
	df['height']
	# are same thing!!! (from http://www.stephaniehicks.com/learnPython/pages/pandas.html
	# -or-
	# http://www.datacarpentry.org/python-ecology-lesson/02-index-slice-subset/)

	/*

	In JavaScript, objects can be used to serve various purposes.

	To maximise our usage of the type system, we should assign different types to our objects depending
	on the desired purpose.

	In this blog post I will clarify two common purposes for objects known as records and dictionaries
	(aka maps), and how they can both be used with regards to the type system.

	# Upgrade / Update outdated casks installed.
	# --------------------------------------------------------------------------------
	# Looks for outdated casks and installs the the latest version.
	# User data (like application preferences) is intact.
	# Updated one liner (thanks Henrik242)
	# --------------------------------------------------------------------------------
	brew upgrade $(brew outdated --cask --greedy --quiet)

	using System;
	using System.Threading;

	static class Program {

	static void Main() {
	Console.Write("Performing some task... ");
	using (var progress = new ProgressBar()) {
	for (int i = 0; i <= 100; i++) {
	progress.Report((double) i / 100);