samchandra

# Ways to execute a shell script in Ruby
# Example Script - Joseph Pecoraro

cmd = "echo 'hi'" # Sample string that can be used

# 1. Kernel#` - commonly called backticks - `cmd` 
# This is like many other languages, including bash, PHP, and Perl
#  Returns the result of the shell command
#  Docs: http://ruby-doc.org/core/classes/Kernel.html#M001111

samchandra

require 'rubygems'
require 'bundler/setup'
require 'time'
require 'date'
require 'twitter'
require 'fb_graph'
require 'pp'
require 'json'

# Twitter

samchandra

require 'logger'

# setup
$LOG = Logger.new("log_file_path")
$LOG.level = Logger::DEBUG

$LOG.debug "What ever you want to log"

# more elaborate, will log all params that
# go through your route/controller, use it 

samchandra

# read password file
password_array = CSV.parse(File.open(PASSWORD_FILE_PATH, "r"))

# find user   
users = [] 
password_array.each do |e|
  if (e[0] == (params[:login]['username']).downcase) && (e[1] == (params[:login]['password']).downcase)
     users << e 
  end
end

samchandra

// Using NSNotificationCenter to add self as an observer for the 
// MPMoviePlayerPlaybackDidFinishNotification message when we finish
// playing a movie

[[NSNotificationCenter defaultCenter] addObserver:self
					 selector:@selector(myMovieFinishedCallback)
					     name:MPMoviePlayerPlaybackDidFinishNotification
					   object:theMovie];

samchandra

// Getting AppDelegate instance anywhere in other controllers
// AppDelegate.h need to be included
YourAppDelegate *appDelegate = (YourAppDelegate*)[[UIApplication sharedApplication] delegate];

samchandra

// Invoking a method after a certain amount of time has passed
// This is useful to remove UIAlertView or to perform any other
// delayed operation
[self performSelector:@selector(methodToPerform) withObject:nil afterDelay:2.0f];

samchandra

// Creating UITableView Cell
// Transparent UIWebView

CGRect cellFrame = CGRectMake(0, 0, 320, 100);
cell = [[[UITableViewCell alloc] initWithFrame:cellFrame] autorelease];
				
CGRect labelFrame = CGRectMake(5,5,310,90);
UIWebView *textWebView = [[[UIWebView alloc] initWithFrame:labelFrame] autorelease];
textWebView.backgroundColor = [UIColor clearColor];
[textWebView setOpaque:NO]; 

samchandra

[UIApplication sharedApplication].idleTimerDisabled = YES;

samchandra

- (BOOL) isPowerConnected
{
    // Temporarily enable battery monitoring to check battery state 
    [UIDevice currentDevice].batteryMonitoringEnabled = YES; 
    BOOL result = ([UIDevice currentDevice].batteryState != UIDeviceBatteryStateUnplugged); 
    [UIDevice currentDevice].batteryMonitoringEnabled = NO; 
    return result
}

// Use this in another method