thomasst

from pyelasticsearch import ElasticSearch, ElasticHttpNotFoundError
from pyparsing import *
import unittest


ELASTICSEARCH_INDEX = 'myindex'
ELASTICSEARCH_URL = 'http://localhost:9200/'

es = ElasticSearch(ELASTICSEARCH_URL)

tute

Intention Revealing Methods

Intention revealing method is simple and yet I see it frequently slip through programmers' code. Developers don't like lengthy methods, or find it inconvenient to read through chubby if-else branches, and if they are nice enough they'll leave comments like those.

If we change spaces by underscores in the comments, delete the comment characters, and define the resulting methods in the same file (as private helpers for example), we get code that explains itself, instead of through verbose long methods, or human code comments which get stale.

Intention revealing methods is the most basic, no brain-teaser, easiest rule that I know. Combine it with Sandi Metz's rule of a maximum of 5 lines per method and you'll get simple code that explains itself, that is a pleasure to read, improving communication and productivity of the team (even when it's only yourself).

Sample Code

giacomomacri

# app/helpers/forms_helper.rb
module FormsHelper

  # A custom FormBuilder class for Rails forms with Twitter Bootstrap 3
  class CustomFormBuilder < ActionView::Helpers::FormBuilder

    # ActionView::Helpers::FormHelper and ActionView::Helpers::FormBuilder
    # methods each have different args. This hash stores the names of the args
    # and the methods that have those args in order to DRY up the method aliases
    # defined below.

skwp

require 'spec/support/grep_matcher'

describe do
  disallow_presence_of pattern: "send(.*#",
    location: "app/",
    description: "Do not use dynamic method invocations",
    failure: "Please change dynamic method call to something more sane."
end

larrybotha

Fix SVG in <img> tags not scaling in IE9, IE10, IE11

IE9, IE10, and IE11 don't properly scale SVG files added with img tags when viewBox, width and height attributes are specified. View this codepen on the different browsers.

Image heights will not scale when the images are inside containers narrower than image widths. This can be resolved in 2 ways.

Use sed in bash to remove width and height attributes in SVG files

As per this answer on Stackoverflow, the issue can be resolved by removing just the width and height attributes.

jturkel

CREATE VIEW product_stats AS
SELECT organization_id, 
       SUM(CASE WHEN status = 'active' THEN 1 END) active_count, 
       SUM(CASE WHEN status = 'inactive' THEN 1 END) inactive_count
FROM products
GROUP BY organization_id

seboudry

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns                     on recent CPU
L2 cache reference ........................... 7 ns                     14x L1 cache
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns                     20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs 4X memory

codingfoo

namespace :deploy do
  namespace :assets do
    desc 'Run the precompile task locally and rsync with shared'
    task :precompile, :roles => :app, :except => { :no_release => true } do
      system("bundle check"); exit if $? != 0
      system("RAILS_ENV=#{stage} bundle exec rake assets:precompile"); exit if $? != 0
      servers = find_servers :roles => :web, :except => { :no_release => true }
      run <<-CMD.compact
        cp -- #{shared_manifest_path.shellescape} #{current_path.to_s.shellescape}/assets_manifest#{File.extname(shared_manifest_path)}
      CMD

ivanvanderbyl

   Wordlist ver 0.732 - EXPECT INCOMPATIBLE CHANGES;
  acrobat  africa   alaska   albert   albino   album    
  alcohol  alex     alpha    amadeus  amanda   amazon   
  america  analog   animal   antenna  antonio  apollo   
  april    aroma    artist   aspirin  athlete  atlas    
  banana   bandit   banjo    bikini   bingo    bonus    
  camera   canada   carbon   casino   catalog  cinema   
  citizen  cobra    comet    compact  complex  context  
  credit   critic   crystal  culture  david    delta    
  dialog   diploma  doctor   domino   dragon   drama    

gingerlime

    config.middleware.insert_before ActionDispatch::ParamsParser, ::Rack::Robustness do |g|
      g.no_catch_all
      # you might need to replace this with JSON::ParserError, depending on your Rails configuration
      # or you can catch both...
      g.on(MultiJson::ParseError) { |ex| 400 }
      g.content_type 'text/plain'
      g.body{ |ex| ex.message }
      g.ensure(true) do |ex|
        env['rack.errors'].write(ex.message)
        logger.warn(ex.message)