View account_main.go
func main() {
aliceAcct := OpenSavingsAccount("12345", "Alice", time.Date(1999, time.January, 03, 0, 0, 0, 0, time.UTC))
fmt.Println("Alice's account =", aliceAcct)
fmt.Println("Alice's account (after deposit) =", aliceAcct)
if err := aliceAcct.Withdraw(Money(10)); err != nil {
} else {
View account.go
package account
import (
//Account is an interface that wraps the common behavior for accounts.
type Account interface {
View Unix Shell related commands
View start-spark-master-slave-history-servers.cmd
TITLE Launcher - Spark Master, 1 Worker and History Server
set SPARK_HOME=C:\aravind\sw\spark-2.0.2-bin-hadoop2.7
:: - Find the IP Address and set it to IP_ADDR env var and reuse it while launching Worker
for /f "tokens=1-2 delims=:" %%a in ('ipconfig^|find "IPv4"') do set ip=%%b
set IP_ADDR=%ip:~1%
echo %IP_ADDR%
:: - Start master
START "Spark Master" %SPARK_HOME%\bin\spark-class.cmd org.apache.spark.deploy.master.Master
View spark-cluster-windows
# - Prints all options available to start the worker
%SPARK_HOME%\bin\spark-class.cmd org.apache.spark.deploy.worker.Worker --help
# - Prints all options available to start the master
%SPARK_HOME%\bin\spark-class.cmd org.apache.spark.deploy.master.Master --help
# - Start master - Web UI on http://localhost:8080
%SPARK_HOME%\bin\spark-class.cmd org.apache.spark.deploy.master.Master
# - Start worker with 1 core and 64mb ram - Web UI on http://localhost:8081
View spark-cli docopt
Apache Spark CLI
spark-cli apps [--completed | --running]
spark-cli app <app-id>
-h, --help show help
-v, -version show version
View first_test.go
package example
import "testing"
func TestNameAndAge(t *testing.T) {
n, a := NameAndAge()
if n != "Esha" || a != 7 {
t.Errorf("Expected 'Esha' and '7' but got %s and %d", n, a)
View first.go
package main
import (
func main() {
fmt.Println("Example - Hello World")
View Legislative System
= Legislative system
Aravind R. Yarram <>
v1.0, 30-Dec-2013
== About Me
Aravind R. Yarram <>
Sr. Principal Innovation - Research and Development, Equifax Inc.
View Product Catalog
= Product Catalog
Aravind R. Yarram <>
v1.0, 17-Sep-2013
== Domain
A product catalog is a collection of products, their categories, manufacturers with their pricing information. Products can be sold separately, included in one or more catalogs or used as substitute products
You can perform the following operations on a product:
Create, Update, Delete (Not recommended, deactivate instead), Deactivate (We should deactivate products that are no longer available instead of deleting them, because they are included in past orders, quotes, or opportunities.), Search etc.