jeremy

From 273f56bd6c23bea5ca910af689aa44d4ca56cb7b Mon Sep 17 00:00:00 2001
From: Jeremy Kemper <jeremy@bitsweat.net>
Date: Fri, 27 Feb 2009 14:13:32 -0800
Subject: [PATCH 1/4] Rather than check socket.closed? on every read/write, connect once and reconnect on exceptions

---
 lib/redis.rb |   45 ++++++++++++++++++++++++---------------------
 1 files changed, 24 insertions(+), 21 deletions(-)

diff --git a/lib/redis.rb b/lib/redis.rb

jeremy

require 'restclient'

# RestClient logs using << which isn't supported by the Rails logger,
# so wrap it up with a little proxy object.
RestClient.log =
  Object.new.tap do |proxy|
    def proxy.<<(message)
      Rails.logger.info message
    end
  end

jeremy

We've seen lots of Ruby feature requests about converting an Enumerable to a Hash: to_h, map_hash, map_to, each_with_hash, etc. Let's look at one common, simple case of this.

Building a key/value mapping from a collection of keys is awkward. We commonly see Hash[*collection.map { |element| [element, calculate(element)] }] or collection.each_with_object({}) { |element, hash| hash[element] = calculate(element) }. Both are verbose. They require boilerplate code that's not relevant to the programmer's intent: to associate an enumerable of keys with calculated values.

Ruby has the idea of an association already: a key and value paired together. It's used by Array#assoc to look up a value from a list of pairs and by Hash#assoc to return a key/value pair. Building up a mapping of key/value pairs is associating keys with values.

So! Consider Enumerable#associate which builds a mapping by associating keys with values:

# Associate filenames with URLs. Before:

jeremy

require 'active_support/concern'

module Touchless
  module TouchLater
    extend ActiveSupport::Concern

    included do
      # Preserve immediate touch behavior as touch_now
      alias_method :touch, :touch_now
      alias_method :touch_later, :touch

jeremy

-- C level backtrace information -------------------------------------------
/opt/ruby2.5.1/bin/../lib/libruby.so.2.5(rb_vm_bugreport+0x974) [0x7f6e7aad0904]
/opt/ruby2.5.1/bin/../lib/libruby.so.2.5(0xaaec4) [0x7f6e7a941ec4]
/opt/ruby2.5.1/bin/../lib/libruby.so.2.5(0x1a89c2) [0x7f6e7aa3f9c2]
/lib/x86_64-linux-gnu/libc.so.6(0x7f6e7a4e4f20) [0x7f6e7a4e4f20]
/lib/x86_64-linux-gnu/libc.so.6(__strlen_avx2+0x11) [0x7f6e7a6345a1] ../sysdeps/x86_64/multiarch/strlen-avx2.S:59
/opt/ruby2.5.1/bin/../lib/libruby.so.2.5(rb_str_new_cstr+0xe) [0x7f6e7aa5712e]
/u/apps/bc3/shared/bundle-ruby221/ruby/2.5.0/gems/bcrypt-3.1.13/lib/bcrypt_ext.so(bc_salt+0x6a) [0x7f6e6ad2b04a]

jeremy

Declared ETags, together with Russian Doll caching, can be used to automatically mix your template and asset versions into the ETags set in your controllers. This avoids the need to blow all browser caches on each deploy and neatly contains the scope of "freshness fallout" when you tweak a view.

To include the template's version in the ETag:

  # Incorporate the cache version for this action into our ETag.
  # This allows template changes to bubble up into HTTP cache
  # freshness and bust browser caches when we make changes.
  etag do
    begin

jeremy

def foo
  e = RuntimeError.new
  def e.backtrace() %w[ lol rofl ] end
  raise e
rescue => e 
  raise e
end

foo

jeremy

<?xml version="1.0" encoding="UTF-8" ?>
<schema name="basecamp" version="1.3">
  <types>
    <!-- indexed/stored verbatim -->
    <fieldType name="string"  class="solr.StrField"         sortMissingLast="true" omitNorms="true" omitTermFreqAndPositions="true"/>

    <!-- "true" or "false" -->
    <fieldType name="boolean" class="solr.BoolField"        sortMissingLast="true" omitNorms="true" omitTermFreqAndPositions="true"/>

    <!-- binary data, base64 -->

jeremy

Keybase proof

I hereby claim:

• I am jeremy on github.
• I am bitsweat (https://keybase.io/bitsweat) on keybase.
• I have a public key ASAHmrs7GVnFuLVA6XK5t2znEMLHrRiixbMEQsbT2wB0dwo

To claim this, I am signing this object:

jeremy

diff --git a/railties/lib/rails/console/helpers.rb b/railties/lib/rails/console/helpers.rb
index 230d3d9..1bbdfd2 100644
--- a/railties/lib/rails/console/helpers.rb
+++ b/railties/lib/rails/console/helpers.rb
@@ -7,5 +7,16 @@ module Rails
     def controller
       @controller ||= ApplicationController.new
     end
+
+    def rake(task)