kyledcline

# frozen_string_literal: true

class RoutingNumberValidator < ActiveModel::EachValidator

  WEIGHTS = ([3, 7, 1] * 3).freeze
  DIVISOR = 10

  def validate_each(record, attribute, value)
    return if value.blank?

kyledcline

PSQL CLI Client

Psql is a fully-fledged CLI client for Postgres, but most people are unaware of its many advanced features.

~/.psqlrc can be edited to persist any behavior or configuration settings you want between psql sessions. It behaves just like ~/.bashrc or ~/.vimrc, sourced at psql launch. See More out of psql for some interesting configurations.

If you have a long query to write and rewrite, you can use \e to edit your query in an editor.

Use \watch at the end of a query in order to automatically re-run the query every few seconds - great for monitoring while making changes elsewhere in your application architecture.

kyledcline

Keybase proof

I hereby claim:

• I am kyledcline on github.
• I am kyledcline (https://keybase.io/kyledcline) on keybase.
• I have a public key whose fingerprint is 9B71 78FB 7745 B052 CB2B E30C 9E83 161C F775 A269

To claim this, I am signing this object:

kyledcline

class BinarySearchTree

  Node = Struct.new(:key, :left, :right)
  attr_reader :root

  def initialize(root=nil, *keys)
    @root = Node.new(root)
    build_tree(*keys) unless keys.empty?
  end