timvisee

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

• There are always 24 hours in a day.
• February is always 28 days long.
• Any 24-hour period will always begin and end in the same day (or week, or month).

fntlnz

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

JackDanger

# In your code, right at the top of any source code file.
trap 'PROF' do
  File.open("/tmp/profile-#{Time.current.to_f}", 'w') {|f| f.write caller(2).join("\n") }
  pid = $$
  Thread.new { sleep 0.5; `kill -PROF #{pid}` }
end

# in a terminal
while true; do
  sleep 0.1

dhh

# config/routes.rb
resources :documents do
  scope module: 'documents' do
    resources :versions do
      post :restore, on: :member
    end

    resource :lock
  end
end

mattetti

require "active_support"
require "active_support/key_generator"
require "json"

# Based on https://gist.github.com/mattetti/7624413
module JsonSessionSerializer
  def self.load(value)
    begin
      JSON.parse(value)
    rescue JSON::ParserError

reinh

Syntax highlight SQL inside Ruby <<-SQL heredocs

Embeds SQL syntax highlighting inside Ruby heredocs labeled SQL. This will also work to embed other syntaxen, e.g., HTML.

Optional PGSQL enhanced syntax:

(requires https://github.com/exu/pgsql.vim)

 syntax include @SQL syntax/pgsql.vim