Knut Behrends knbknb

RDF Nodes cannot exist without at least one edge, to another node or to themselves.

IRI: Internationalized Resource Identifier, generalized URI used for proper things URLs are not officially recognised as a type of RDF node

Literal: string, number, date, etc. used for values

<!-- markdownlint-disable MD041 -->
<!-- markdownlint-disable MD022 -->
<!-- markdownlint-disable MD026 -->
dig gfz-potsdam.de A        # A records only (name -> IP)
dig gfz-potsdam.de A +short # Short output
dig gfz-potsdam.de MX       # MX records (mail server)
dig gfz-potsdam.de TXT      # TXT records (text)
dig gfz-potsdam.de NS       # NS records (name server)
dig gfz-potsdam.de SOA # SOA records (start of authority)

The Ultimate Unit Testing Cheat-sheet

Sinon Chai
Chai

	# display a JSON object as a table using PowerShell.
	# the JSON is generated by a perl script
	perl api-gfz.pl -r \
	\| pwsh -Command "$json = Get-Content -Raw -Stream; ConvertFrom-Json $json \| Format-Table -AutoSize "

	# with a Where-Object filter in between:
	perl api-gfz.pl -r \
	\| pwsh -Command "$json = Get-Content -Raw -Stream; ConvertFrom-Json $json \| Where-Object { \$_.status -eq 'paused' } \| Format-Table -AutoSize "

	# Assumes that the JSON structure is an array of objects

	library(tidyverse)
	library(lubridate)
	library(rvest)

	# Even better to use the Internet Archive since web pages change over time
	url <- "https://web.archive.org/web/20220908211042/https://en.wikipedia.org/wiki/..."

	wiki_raw <- read_html(url)
	wiki_raw

	# CONSTRUCT query to surface the graph schema (ontology) as a sub-graph.

	CONSTRUCT {
	?domain ?property ?range
	}
	WHERE {
	?property rdfs:domain ?domain ;
	rdfs:range ?range .

	FILTER(?domain NOT IN(rdfs:Class, rdf:Property))

	library(tidyverse)
	tt <- tibble(
	x = c(TRUE, TRUE, FALSE, FALSE),
	y = c(TRUE, FALSE, TRUE, FALSE)
	)

	`->` <- function(x, y) {
	as.logical(dplyr::case_when(
	x == TRUE & y == TRUE ~ TRUE,
	x == TRUE & y == FALSE ~ FALSE,

	[
	{
	"subject": "http://example.com/demo/Country",
	"predicate": "http://example.com/demo/area_in_sq_km",
	"object": "http://www.w3.org/2001/XMLSchema#double"
	},
	{
	"subject": "http://example.com/demo/Country",
	"predicate": "http://example.com/demo/capital",
	"object": "http://www.w3.org/2001/XMLSchema#string"

	// Postman snippet to check if cookie jar contains a Yii2 Session cookie.
	// For this to work any domain with a cookie of that value must be whitelisted inside postman.
	// The error message text will point this out in case it fails.

	let URL = require('url'); // postman-built-in

	const cookieJar = pm.cookies.jar();
	const cookieName = "PHPSESSID";
	const baseUrl = pm.environment.get("baseUrl");
	const parsedUrl = URL.parse(baseUrl)

	const fs = require('fs');
	const process = require('process');
	const newman = require('newman'); // require newman in your project
	// call this as node newman-as-node-module-write-to-disk.js

	// simpler: How can machine_name and port_number can be passed dynamically to the Postman tests when using Newman?
	// newman run my-collection.json --global-var "machineName=mymachine1234" --global-var "machinePort=8080"
	// In your request builder, just use them as normal variables https://{{machineName}}:{‌{machinePort}}.

	// call newman.run to pass `options` object and wait for callback