pixeltrix

When should you use DateTime and when should you use Time?

It's a common misconception that [William Shakespeare][1] and [Miguel de Cervantes][2] died on the same day in history - so much so that UNESCO named April 23 as [World Book Day because of this fact][3]. However because England hadn't yet adopted [Gregorian Calendar Reform][4] (and wouldn't until [1752][5]) their deaths are actually 10 days apart. Since Ruby's Time class implements a [proleptic Gregorian calendar][6] and has no concept of calendar reform then there's no way to express this. This is where DateTime steps in:

>> shakespeare = DateTime.iso8601('1616-04-23', Date::ENGLAND)
=> Tue, 23 Apr 1616 00:00:00 +0000
>> cervantes = DateTime.iso8601('1616-04-23', Date::ITALY)
=> Sat, 23 Apr 1616 00:00:00 +0000

jrafanie

We were seeing 500+ MB of increased virtual memory usage compared to older versions of ManageIQ per process.

Using ManageIQ and require logging, we can measure how long and how much memory EACH require takes:

REQUIRE_LOG=true bin/rails r ""

This writes a log file in vmdb/log/require_DATEXYZ.log.

Note, require_with_logging is required in the preinitializer.rb

havenwood

@[Link("mruby")]
lib MRuby
  type MRubyState = Void*

  fun open = mrb_open : MRubyState
  fun load_string = mrb_load_string(mrb : MRubyState, code : Pointer(UInt8))
  fun close = mrb_close(mrb : MRubyState)
end

CODE = <<-RUBY_CODE

mig-hub

# coding: utf-8
require 'sinatra'
set server: 'thin', connections: []

get '/' do
  halt erb(:login) unless params[:user]
  erb :chat, locals: { user: params[:user].gsub(/\W/, '') }
end

get '/stream', provides: 'text/event-stream' do

piscisaureus

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

evilpie

/* See: http://0x10c.com/doc/dcpu-16.txt */

function hex(n) {
	return '0x' + n.toString(16);
}

function disassemble (code) {
	var PC = 0;

	var operand = function (bits) {

krainboltgreene

#!/usr/bin/env ruby

# Return and remove the last value of the stack array
def pop
  $stack.pop || raise(StackUnderflow)
end

# Add a expression to the stack
def push(expression)
  $stack << expression

fogus

#!/usr/bin/env ruby

# the stack
$stack = []
def pop() $stack.pop || ufe end
def push(f) $stack<<f end
# poor man's Exception class
def ufe() raise("Stack underflow") end

# lambda constructor helpers

perimosocordiae

#!/usr/bin/env ruby

# the stack
$stack = []
def pop() $stack.pop || ufe end
def push(f) $stack<<f end
# poor man's Exception class
def ufe() raise("Stack underflow") end

# lambda constructor helpers