Joe Devlin NorthDecoder

NorthDecoder / is_python_module_installed.py

Last active May 19, 2025 15:24

Check pip list to see if a python module is installed

	def is_module_installed(module_name):
	'''
	Input: module_name -> string
	Output: True or False -> boolean

	If the input module_name is
	* in `pip list` returns True
	* NOT in `pip list` returns False
	'''

NorthDecoder / mp_check.py

Created March 24, 2025 19:57

Multiprocessing requires more than one cpu - check

	import logging
	logging.basicConfig(level=logging.INFO)

	import multiprocessing as mp
	def mp_check():
	# multiprocessing requires more than one cpu
	cpu_count = mp.cpu_count()
	if cpu_count > 1 :
	# count ok
	logging.info("OK: cpu_count: " + str(cpu_count) + ", is greater than 1")

NorthDecoder / cpp_modulo_example.cpp

Created December 19, 2022 20:28

An example c++ modulo calculator with results in a table

	// example tested at https://tio.run/#cpp-gcc
	// make a table with modulo calculations

	#include<iostream>
	using std::cout;
	int main() {
	int dmax = 7;
	int nmax = 5;
	cout << "D->";
	for (int denominator = 1; denominator < dmax; denominator ++) {

NorthDecoder / openSession

Last active February 5, 2022 09:19

A bash script for opening a Tmux session with multiple predefined autopopulated panes

	openSession () {

	# start-tmux-with-several-panes-open-at-the-same-time

	# input from the command line
	# usage:
	# openSession /my_project_directory/name_here my_tmux_session_name

	# Reference:
	# https://askubuntu.com/questions/830484/how-to-start-tmux-with-several-panes-open-at-the-same-time#answer-1351351

NorthDecoder / resurrect-chapter.sh

Last active April 29, 2021 22:32

A helper script for manual testing Chapter

	#!/usr/bin/bash

	clear
	me=$( basename "$0" )
	echo "~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ "
	echo "Running script $me"
	echo "~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ "
	# Reference:
	# https://github.com/freeCodeCamp/chapter

NorthDecoder / my-versions.sh

Created October 16, 2020 20:44

Quick echo versions to display for nvm, node, npm, docker, tmux, vim, nano, ansible, and python

NorthDecoder / luhn.py

Created September 22, 2020 16:44

Luhn algorithm for validating credit card numbers

NorthDecoder / is_cc_valid_01.py

Last active September 22, 2020 16:29

Validate credit card number with Luhn algorithm

	# file: is_cc_valid.py
	# LUHN Algorithm
	# Validate credit card number with Luhn algorithm

	def is_cc_valid(cc_number, given_checksum):
	# ref: https://en.wikipedia.org/wiki/Luhn_algorithm
	double_every_other = []
	sum_digits = []
	minus_nine = []

NorthDecoder / list-installed-python-modules.py

Last active May 25, 2021 19:38

Print a list of installed python modules

	# list installed python modules
	# > sorted alphabetically
	import sys
	import os

	def list_dict_keys(a_dictionary, list_heading_text):
	"""
	Print a heading and a list of dictionary keys
	to the command line.
	"""

NorthDecoder / customize-bashrc-command-prompt

Last active February 14, 2025 16:45

bashrc customized command prompt

	# Add a custom command line prompt with color and git branch name
	# > On linux adds newline for more room to type

	# add the following to the bottom of the ~/.bashrc file

	# prerequisite:
	# bash function __git_ps1 must be found and sourced in order for the
	# git branch to be shown.
	# __git_ps1 Reference:
	# https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh