almost

This is a proposal for a lightning talk at the Reactive 2016 conference.

NOTE: If you like this, star ⭐ the Gist - the amount of stars decides whether it makes the cut! You could also Retweet if you want :)

Get Flow

Type checking JavaScript with Flow

JavaScript is a dynamic language, and there's nothing wrong with that. It allows quick iteration and lowers barriers. However, sometimes some compile-time type checking is just what you need to keep your code in line and give yourself the confidence to build bigger and faster. Flow gives the best of both worlds. You can have normal JavaScript but you can also add types where they're helpful, and it adds zero cost at runtime. In this talk I'll show Flow as it applies to a Redux & React codebase.

tjmw

Migrating a MySQL DB to a Heroku Postgres Instance

1. Create a MySQL Dump

mysqldump -h<host> --compatible=postgresql -u<user> -p <database_name> > /tmp/my_dump.sql

2. Import MySQL dump locally

cat my_dump.sql | mysql -h<host> -u<user> -p <database_name>

olivernn

# logfilename       [owner:group] mode count size when flags [/pid_file] [sig_num]
/path/to/log/*.log                644  0     5120 *    GN

plasticine

So yesterday brought the sad news that Google Reader is being killed off. C’est la vie it seems, given it was a Google product. In my search for an alternative I rediscovered Fever and decided to see if I could run it up for free on Heroku. Onwards...

Personally I think the news about Reeder is quite sad, as I would quite happily have paid for it as a service. In fact I like RSS so much that I actually shelled out the $30 for Fever when it first came out years ago (I was also pretty massive Shaun Inman fanboy if I’m being honest).

I ended up setting Fever aside because screw having to manage self-hosting for PHP and MySQL, right?

If you’re new to Fever I recommend going and checking it out, but also reading the post in response to the Google Reader announcement by Fevers author, Shaun, for a good list of what Fever is and isn’t.

Enough jibba-jabba!

olly

matcher = ->(model) do
  begin
    model.valid?
    true
  rescue ActiveModel::StrictValidationFailed
    false
  end
end

RSpec::Matchers.define :pass_strict_validations do

mloughran

# Easily calculate mean and standard distribution of a distribution without
# collecting all values in memory
#
class Distribution
  def initialize
    @n, @sum_x, @sum_x_2 = 0, 0, 0
  end
  
  def <<(x)
    @n += 1