jarvisrob

# For installation and overview:
# - https://github.com/pyenv/pyenv
# - https://github.com/pyenv/pyenv-virtualenv

# Note all the changes required to dot files

# Example usage *once installed* - using Python 3.10.4 for project in ~/lab/project

# Install Python version
pyenv install 3.10.4

jarvisrob

# Uninstall
# Check directory for installation is correct, delete folder and all files, check it's been removed
xcode-select -p
sudo rm -rf /Library/Developer/CommandLineTools
xcode-select -p

# Re-install, then check which directory it's been installed into
xcode-select --install
# Confirm and monitor installation through the dialog window that opens
xcode-select -p

jarvisrob

# Currently using uninstall/install--would be good to see if can use brew cask upgrade, or just install new version side-by-side
brew cask uninstall r
brew cask install r

# Performance without linking BLAS (vecLib) from Apple's Accelerate Framework, i.e. *no* default multi-threading
Rscript -e "sessionInfo()"
Rscript -e "d <- 2e3; system.time({ x <- matrix(rnorm(d^2),d,d); tcrossprod(x) })"

# Link Apple's BLAS to make R run multi-threaded by default where possible and note performance boost
ln -sf \

jarvisrob

import socket

def check_internet(host="8.8.8.8", port=53, timeout=3):
    # Checks for internet connection by testing to see if it can make a socket connetion to (host, port)
    # Host: 8.8.8.8 (google-public-dns-a.google.com)
    # Port: 53/tcp
    try:
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        sock.settimeout(timeout)
        sock.connect((host, port))

jarvisrob

confirm_continue_yN() {
    # Asks user to confirm to proceed
    #   $1 is the confirmation message, usually a question
    #   $2 is the abort message
    # Converts user input to lower case before regex check for 'y' or 'yes'
    # If it's not one of those responses then exits the script echoing the abort message
    read -r -p "$1 [y/N] " response
    response_lowercase=$( echo "$response" | awk '{print tolower($0)}' )
    if [[ ! "$response_lowercase" =~ ^(yes|y)$ ]]
    then