Prepararation

Create a folder at the root of your user home folder (Example: C:/Users/uname/) called .ssh.
Create the following files if they do not already exist (paths begin from the root of your user home folder):

.ssh/config

kvasilopoulos / return-two-values.R

Created August 8, 2020 01:01

How to assign from a function which returns more than one value?

	# (https://stackoverflow.com/questions/1826519/how-to-assign-from-a-function-which-returns-more-than-one-value)
	':=' <- function(lhs, rhs) {
	frame <- parent.frame()
	lhs <- as.list(substitute(lhs))
	if (length(lhs) > 1)
	lhs <- lhs[-1]
	if (length(lhs) == 1) {
	do.call(`=`, list(lhs[[1]], rhs), envir=frame)
	return(invisible(NULL))
	}

kvasilopoulos / cran-policy.txt

Created April 23, 2020 17:15

Packages which use Internet resources should fail gracefully

	CRAN policy:

	''Packages which use Internet resources should fail gracefully with an
	informative message if the resource is not available (and not give a
	check warning nor error).'

kvasilopoulos / restore-delete-file-git

Created December 11, 2019 22:10

Find and restore a deleted file in a Git repository

-Copied from https://stackoverflow.com/questions/953481/find-and-restore-a-deleted-file-in-a-git-repository
-Find the last commit that affected the given path. As the file isn't in the HEAD commit, this commit must have deleted it.
-    git rev-list -n 1 HEAD -- <file_path>
-Then checkout the version at the commit before, using the caret (`^`) symbol:
-    git checkout <deleting_commit>^ -- <file_path>

kvasilopoulos / land-registry-sparql.php

Created September 12, 2019 21:07 — forked from hubgit/land-registry-sparql.php

Fetch Land Registry transaction data using SPARQL

	<?php

	$curl = curl_init('http://landregistry.data.gov.uk/landregistry/query');

	curl_setopt_array($curl, array(
	CURLOPT_VERBOSE => true,
	CURLOPT_ENCODING => 'gzip,deflate',
	CURLOPT_HTTPHEADER => array('Accept: text/plain'),
	));

kvasilopoulos / git+overleaf+github.md

Created August 19, 2019 18:12 — forked from jnaecker/git+overleaf+github.md

Using Overleaf as your TeX editor but getting your files to Github

git + overleaf + github

Setup

Connect Overleaf and your local repo

Make a new project on Overleaf.
In the share menu, copy the link from "Clone with git"
On your computer:
- use cd to navigate to where you want to put your project

kvasilopoulos / gist:0efac2d797da56fa8154f1c70cfe7d73

Created August 19, 2019 16:05 — forked from CristinaSolana/gist:1885435

Keeping a fork up to date

1. Clone your fork:

git clone [email protected]:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream

kvasilopoulos / cmd.sh

Last active August 21, 2019 11:54

Git tag after CRAN version acceptance


	<!-- If you’re not using GitHub or you want to create a tag without a release on GitHub.
	You can use the follow git commands: -->

	git tag -a v1.0.0 -m "Releasing version v1.0.0"
	git push --tags

kvasilopoulos / historical_sp500.R

Last active August 12, 2019 16:48

Download Historical S&P500 Price and Dividends from Shiller's dataset. The output is a formatted data.frame.

	pkgs <- c("readxl", "lubridate", "zoo", "dplyr")
	lapply(pkgs, require, character.only = TRUE)

	temp <- paste0(tempfile(), ".xls")
	file <- download.file("http://www.econ.yale.edu/~shiller/data/ie_data.xls",
	destfile = temp, mode = "wb")

	sp500 <- read_excel(path = temp,
	sheet = "Data",
	col_types = c("text", "skip", "skip", "skip",

kvasilopoulos / progressbar_doParallel_foreach.R

Last active April 10, 2024 08:27

How to include progressbar with doParallel (previously done only with the doSNOW-package) and foreach loop. Note, that you can easily wrap this into a function.

	library(doParallel)

	# Choose number of iterations
	n <- 100

	# Progress combine function
	f <- function(iterator){
	pb <- txtProgressBar(min = 1, max = iterator - 1, style = 3)
	count <- 0
	function(...) {