Kenn Ejima kenn

消費税の計算

原材料: A社
製造: B社
卸: C社
小売: D社

消費税が無い状態で、小売売価100、卸値70、製造販売価50、原材料価格20とする。1個商品が売れた場合

|　|売価|仕入れ値|粗利|

Ruby and Python profilers

CPU profilers

Python

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

Server Price Breakdown: DigitalOcean, Amazon AWS LightSail, Vultr, Linode, OVH, Hetzner, Scaleway/Online.net:

Permalink: git.io/vps

$5/mo

Provider	Type	RAM	Cores	Storage	Transfer	Network	Price

	#!/bin/bash

	# Script to backup git repo to Backblaze B2
	# Set bucket, dir, password and account to use for the backup. I keep mine in local env vars
	# These are set by localrc which lives on an encrypted home directory and is executed by my bashrc
	# Ensure you have authorized the B2 command line tool with the correct account AND added your SSH
	# public key to your github account, if you need to backup private repositories.

	# To restore this repo in the future, download it from B2, extract it and then use this command:
	# cd old-repository.git

	module IncrementAndDecrement
	def increment(&block)
	matcher = change(&block).by(1)
	RSpec::Matchers::AliasedMatcher.new(matcher, lambda do \|desc\|
	desc.gsub("changed", "incremented").gsub("change", "increment")
	end)
	end

	def decrement(&block)
	matcher = change(&block).by(-1)

	begin
	require "bundler/inline"
	rescue LoadError => e
	$stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
	raise e
	end

	gemfile(true) do
	source "https://rubygems.org"

	# LVDB - LLOOGG Memory DB
	# Copyriht (C) 2009 Salvatore Sanfilippo <antirez@gmail.com>
	# All Rights Reserved

	# TODO
	# - cron with cleanup of timedout clients, automatic dump
	# - the dump should use array startsearch to write it line by line
	# and may just use gets to read element by element and load the whole state.
	# - 'help','stopserver','saveandstopserver','save','load','reset','keys' commands.
	# - ttl with milliseconds resolution 'ttl a 1000'. Check ttl in dump!