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@sionc
sionc / rails-postgres-backbone-bootstrap-bootswatch
Last active April 6, 2020 17:35
Instructions on creating a new app using Ruby on Rails, Postgresql, Backbone.js, Twitter Boostrap, Bootstwatch
- Check rails version
$ rails -v
- To update rails
$ gem update rails
- Creating a new rails app using postgresql
$ mkdir rails_projects
$ cd rails_projects
$ rails new myapp --database=postgresql
@ceteri
ceteri / 01.repl.txt
Last active April 17, 2022 18:46
Intro to Apache Spark: general code examples
$ ./bin/spark-shell
14/04/18 15:23:49 INFO spark.HttpServer: Starting HTTP Server
14/04/18 15:23:49 INFO server.Server: jetty-7.x.y-SNAPSHOT
14/04/18 15:23:49 INFO server.AbstractConnector: Started SocketConnector@0.0.0.0:49861
Welcome to
____ __
/ __/__ ___ _____/ /__
_\ \/ _ \/ _ `/ __/ '_/
/___/ .__/\_,_/_/ /_/\_\ version 0.9.1
/_/
@ceteri
ceteri / clk.tsv
Last active May 14, 2020 13:13
Intro to Apache Spark: code example for (K,V), join, operator graph
2014-03-04 15dfb8e6cc4111e3a5bb600308919594 11
2014-03-06 81da510acc4111e387f3600308919594 61
@ceteri
ceteri / log.scala
Last active May 14, 2020 13:12
Intro to Apache Spark: code example for RDD animation
// load error messages from a log into memory
// then interactively search for various patterns
// base RDD
val lines = sc.textFile("log.txt")
// transformed RDDs
val errors = lines.filter(_.startsWith("ERROR"))
val messages = errors.map(_.split("\t")).map(r => r(1))
messages.cache()