kvasilopoulos

Setup SSH Authentication for Git Bash on Windows

Prepararation

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

• .ssh/config

kvasilopoulos

# (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:

''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

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

<?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

Setup

Connect Overleaf and your local repo

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

kvasilopoulos

1. Clone your fork:

git clone git@github.com: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

<!-- 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

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

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(...) {