s-ashwinkumar

#!/bin/bash

# 'arg-x' and 'x' behave like flags
# 'arg-y' and 'y' have required arguments.
# 'arg-z' and 'z' have optional arguments

# Initial value for the flag parameter (default false)
X=0

# create the option string

s-ashwinkumar

The fastest remote directory rsync over ssh archival I can muster (40MB/s over 1gb NICs)

This creates an archive that does the following:

rsync (Everyone seems to like -z, but it is much slower for me)

• a: archive mode - rescursive, preserves owner, preserves permissions, preserves modification times, preserves group, copies symlinks as symlinks, preserves device files.
• H: preserves hard-links
• A: preserves ACLs

s-ashwinkumar

class MyClass
  def old_method
    'old_method OR new_method'
  end
  alias :new_method :old_method
  # NOTE-1 : 'alias' is a keyword and not a method, that is why 
  #  there is no comma (I almost everytime type a comma there !)
  # NOTE-2 : If you want to use the method kind of syntax you can use 
  #  the 'method' Module#alias_method which does the same thing
  #  but is actually a method.

s-ashwinkumar

class Myclass
  @@old_methods = { oldMethod1: :new_method1, oldMethod2: :new_method2 }
  
  def new_method1
    'Myclass#new_method1'
  end
  
  def new_method2
    'Myclass#new_method2'
  end

s-ashwinkumar

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

s-ashwinkumar

let iReturnEarly = true;

const willAddNewPost = new Promise(
  (resolve, reject) => {
    if(iReturnEarly) {
      resolve("This is new post");
    }else {
     reject("Damn I missed it.");
   }
 }

s-ashwinkumar

const recordSong = function(new_post) {
  // This is a shorthand for functions with just resolved state.
  return Promise.resolve("I have recorded a song and "+new_post); 
};

willAddNewPost
  .then(recordSong)
  .then(console.log)
  .catch(console.log);
// Kudos to you if you caught the shorthand in 'console.log'

s-ashwinkumar

asyncMeth1()
  .then(asyncMethod2)
  .then(asyncMethod3)
  .then(finalResult => console.log("I DID IT - "+finalResult))
  .catch(failCall);

s-ashwinkumar

try {
  var result1  = syncMeth1();
  var result2 = syncMeth2(result1);
  var finalResult = syncMeth3(result2);
  console.log("I DID IT - "+finalResult);
}catch(error){
  failCall(error);
}

s-ashwinkumar

willAddNewPost
  .then(new_post => console.log(new_post))
  .catch(error_message => console.log(error_message));