ololobus

Apache Spark installation + ipython/jupyter notebook integration guide for macOS

Tested with Apache Spark 2.1.0, Python 2.7.13 and Java 1.8.0_112

For older versions of Spark and ipython, please, see also previous version of text.

Install Java Development Kit

jayswan

>>> import itertools
>>> import string
>>> from elasticsearch import Elasticsearch,helpers
es = Elasticsearch()
>>> # k is a generator expression that produces
... # a series of dictionaries containing test data.
... # The test data are just letter permutations
... # created with itertools.permutations.
... #
... # We then reference k as the iterator that's

justin808

# Using these pry gems -- copy to your Gemfile
# group :development, :test do
#   gem 'awesome_print' # pretty print ruby objects
#   gem 'pry' # Console with powerful introspection capabilities
#   gem 'pry-byebug' # Integrates pry with byebug
#   gem 'pry-doc' # Provide MRI Core documentation
#   gem 'pry-rails' # Causes rails console to open pry. `DISABLE_PRY_RAILS=1 rails c` can still open with IRB
#   gem 'pry-rescue' # Start a pry session whenever something goes wrong.
#   gem 'pry-theme' # An easy way to customize Pry colors via theme files
# end

lfender6445

Pry Cheat Sheet

• Youtube Tutorial 2013

Command Line

• pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
• pry -r ./config/environment.rb - load your rails into a pry session

Debugger

dhh

David Heinemeier
Gihub: 
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37Signals

anderser

#!/usr/bin/env python

import sys
import argparse
import networkx as nx
import community
from networkx.readwrite import json_graph


def graphmltojson(graphfile, outfile):

aras-p

// Just before switching jobs:
// Add one of these.
// Preferably into the same commit where you do a large merge.
//
// This started as a tweet with a joke of "C++ pro-tip: #define private public",
// and then it quickly escalated into more and more evil suggestions.
// I've tried to capture interesting suggestions here.
//
// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

onyxraven

#XLarge DBInstanceClassMemory = 15892177440 = 14.8GB
#/32 = 496630545 = 473MB
#/64 = 248315272 = 236MB
#/128 = 124157636 = 118MB
#/256 = 62078818 = 59MB
#/512 = 31039409 = 29MB
#/12582880 = 1263 #default same divisor as max_connections = 4041.6MB = 4237924762
#/25165760 = 623 # half of max_connections = 1993.6MB
#/50331520 = 315 # quarter of max_connections = 1008MB = 1056964608
#*(3/4) #default innodb pool size = 11922309120

sky-y

;; Open the file name being pointed in an other window or dired
;; reference: http://kouzuka.blogspot.com/2011/02/emacsurlfinder.html
(defun my-directory-or-file-p (path)
  "return t if path is a directory,
return nil if path is a file"
  (car (file-attributes path)))

(defun my-open-emacs-at-point ()
  "open the file with opening emacs"
  (interactive)