vemarav

require 'aws-sdk'

ses = AWS.ses
AWS.config(
:access_key_id     => '..',
:secret_access_key => '..,
:server => '..')
#puts ses.identities.map(:&identity)
ses.send_email(subject: "Hi",
               from: "aravind@classpro.in",

vemarav

begin
  # code that raise an error 
  # or an exception
rescue Exception => e
  # e is an Exception object contains
  # information of the error
  # e.message is the information
  # about why error occurred and
  # which object caused the error,
  # where e.backtrace(Array) holds

vemarav

begin
  # code that raise an Error
  # or an Exception
rescue StandardError => e
  # Exceptions are not rescued. But,
  # StandardError and subclasses
  # of StandardError are rescued
  puts e.message, e.backtrace, 
  # puts e.full_message, e.backtrace_locations
end

vemarav

# let say you have a class Game and its Audio
module Audio
  class NoDeviceError < Error::ENODEV # (No such device)
  end
end


class Game
  include Audio
  

vemarav

begin
  puts "a" * 5 # => "aaaaa"
  puts 1 + ""  # => TypeError (string can't be coerced into Integer)
  puts 5 * "a" # => Never Evaluate
rescue TypeError => e
  puts e.message, e.backtrace
end

vemarav

import 'package:flutter/material.dart';

void main() => runApp(new Keeper());

class Keeper extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Keeper',
      home: new KeeperDrawer(),

vemarav

import 'package:flutter/material.dart';

const String _AccountName = 'Aravind Vemula';
const String _AccountEmail = 'vemula.aravind336@gmail.com';
const String _AccountAbbr = 'AV';

void main() => runApp(new Keeper());

class Keeper extends StatelessWidget {
  @override

vemarav

import 'package:flutter/material.dart';

const String _AccountName = 'Aravind Vemula';
const String _AccountEmail = 'vemula.aravind336@gmail.com';
const String _AccountAbbr = 'AV';

void main() => runApp(new Keeper());

class Keeper extends StatelessWidget {
  @override

vemarav

import 'package:flutter/material.dart';

const String _AccountName = 'Aravind Vemula';
const String _AccountEmail = 'vemula.aravind336@gmail.com';
const String _AccountAbbr = 'AV';

void main() => runApp(new Keeper());

class Keeper extends StatelessWidget {
  @override

vemarav

Navigator.of(context).push(
  new PageRouteBuilder(
    pageBuilder: (BuildContext context, _, __) {
      return new Notes();
    },
    transitionsBuilder: (_, Animation<double> animation, __, Widget child) {
      return new FadeTransition(
        opacity: animation,
        child: child
      );