Randy Lai randy3k

Update: Just run ZwaveJS2Mqtt

Shortly after writing this, I realized that ZwaveJS2Mqtt can be used with a websocket connection instead of the mqtt. I've had a great experience with it, so there's really no good reason to use what is below.

Documentation: https://zwave-js.github.io/zwavejs2mqtt/#/

I'll leave the text below, because somebody might find it useful.

Getting zwave-js running in docker

GPG - SSH setup

Generating the master key

Here we create the master key. We want only Certify capability: we use the master key only to create the subkeys, Sign - Encrypt - Authenticate capabilities will be assigned to the subkeys.

Run the following command to start the master key generation process. Select the set your own capabilities creation process (type 8)

  ▶ gpg --full-generate-key --expert

Last updated: 2017-03-18

Searching for Files

Find images in a directory that don't have a DateTimeOriginal

exiftool -filename -filemodifydate -createdate -r -if '(not $datetimeoriginal) and $filetype eq "JPEG"' .

###Output photos that don't have datetimeoriginal to a CSV### Note this can take a long time if you have a lot of jpgs

	-- Create a group
	CREATE ROLE readaccess;

	-- Grant access to existing tables
	GRANT USAGE ON SCHEMA public TO readaccess;
	GRANT SELECT ON ALL TABLES IN SCHEMA public TO readaccess;

	-- Grant access to future tables
	ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO readaccess;

	# What's the fastest way to determine the number of rows of a CSV in R?
	# ...Reading the entire CSV to only get the dimensions is likely too slow. Is there a faster way?
	# Benchmarks done on a EC2 r3.8xlarge
	# Cowritten with Abel Castillo <github.com/abelcastilloavant>

	m <- 1000000
	d <- data.frame(id = seq(m), a = rnorm(m), b = runif(m))
	dim(d)
	# [1] 1000000 3
	pryr::object_size(d)

	class Dinic:
	class Edge:
	def __init__(self, to, cap, rev):
	self.to = to
	self.cap = cap
	self.rev = rev

	def __repr__(self):
	return "(to: {0} cap: {1} rev: {2})".format(self.to, self.cap, self. rev)

	#!/usr/bin/env python3

	import requests
	import plistlib
	from collections import Counter
	import posixpath
	from urllib.parse import urlsplit
	import sys
	import os

	574 : string [std]
	311 : source
	278 : entity [std]
	253 : keyword [std]
	242 : comment [std]
	236 : entity.name.tag
	229 : constant [std]
	212 : support.function [std]
	209 : storage [std]
	209 : entity.other.attribute-name

	# =============================================
	# Modifying a data frame in place
	# =============================================

	library(ggplot2)
	str(diamonds)

	# Modify data frame in place, in loop
	# This is super, super slow
	system.time({

	#include <stdio.h>
	#include <stdint.h>
	#include <stddef.h>
	#include <sys/types.h>
	#include <wchar.h>
	#include <time.h>

	// XXX: "%zd" format cannot work in VC, MinGW
	#define prints(type) printf(#type "\t\t" "%lu\n", (unsigned long)sizeof(type))