jsborjesson

class Matrix
  def initialize(rows = [])
    @rows = rows
  end

  def [](x, y)
    @rows.fetch(y, [])[x]
  end

  def []=(x, y, value)

jsborjesson

# Measure startup time on a Ruby file
vim_startup_time=$((time vim Rakefile +q) 2>&1 >/dev/null | grep real | awk '{ print $2 }')

# Echo the results
echo $(git sha) " " $vim_startup_time

# Step back one commit without warnings
git checkout HEAD~ 2> /dev/null

# Recurse

jsborjesson

-- Create 2 tables to link together
CREATE TABLE customer (id SERIAL PRIMARY KEY);
CREATE TABLE article (id SERIAL PRIMARY KEY);

-- Insert a few rows
INSERT INTO customer DEFAULT VALUES;
INSERT INTO customer DEFAULT VALUES;
INSERT INTO article DEFAULT VALUES;
INSERT INTO article DEFAULT VALUES;

jsborjesson

# This is a quick script migrating data from MoneyWise to Wallet
#
# MoneyWise: https://play.google.com/store/apps/details?id=com.handynorth.moneywise
# Wallet: https://play.google.com/store/apps/details?id=com.droid4you.application.wallet
#
# It uses MoneyWise's CSV export to upload via the Wallet API.
#
# Data loss/Things I did not care about.
#     - Time. All records will be at 00:00 at the correct date.
#     - Accounts. Everything will go into the same account.

jsborjesson

Org-mode solution to this riddle.

More to learn about org-mode than to solve the riddle…

1. The product of the 3 numbers is 36.
2. The sum is the hallway number, which Zara knows.
3. The largest number is unique.
4. Zara needed the third clue.

Work out all the factors that produce 36:

jsborjesson

# Monkeypatch to remove tasks
module Rake
  def self.remove_task(task_name)
    Rake.application.instance_variable_get('@tasks').delete(task_name.to_s)
  end
end

# Example: disable all of the tasks in the db namespace
namespace :db do |ns|
  ns.tasks.each do |task|

jsborjesson

import java.util.ArrayList;
import java.util.Arrays;

public class Primes {
    public static void main(String[] args) {
        int limit = 1000;

        // Calculate primes under limit and measure the time it took
        long startTime = System.currentTimeMillis();
        ArrayList<Integer> answer = primes(limit);

jsborjesson

# Reset
Color_Off='\[\e[0m\]'

# Regular Colors
Black='\[\e[0;30m\]'
Red='\[\e[0;31m\]'
Green='\[\e[0;32m\]'
Yellow='\[\e[0;33m\]'
Blue='\[\e[0;34m\]'
Purple='\[\e[0;35m\]'

jsborjesson

# Rakefile
namespace :db do
  desc "Run migrations"
  task :migrate, [:version] do |t, args|
    require "sequel"
    Sequel.extension :migration
    db = Sequel.connect(ENV.fetch("DATABASE_URL"))
    if args[:version]
      puts "Migrating to version #{args[:version]}"
      Sequel::Migrator.run(db, "db/migrations", target: args[:version].to_i)

jsborjesson

table {
  padding: 0;
  border-collapse: collapse;
}

table tr {
  border-top: 1px solid #cccccc;
  background-color: white;
  margin: 0;
  padding: 0;