sax1johno

/**
 * Back button listener.
 * Will close the application if the back button pressed twice.
 */
@Override
public void onBackPressed()
{
    if(backButtonCount >= 1)
    {
        Intent intent = new Intent(Intent.ACTION_MAIN);

sax1johno

mkdir test
cd test
echo "# test_repo" >> README.md
cat README.md 
ls
git init
ls -la
git status
git add README.md 
git commit -m "initial commit"

sax1johno

class Animal {
   private String mSpecies = "None";
   public void talk() {
      printf("");
   }
   public String getSpecies() {
      return mSpecies;
   }
}

sax1johno

// We create the "Animal" function first.
function Animal() {
  this.species = "None";
  this.getSpecies() {
    return this.species;
  }
}

// Now, we create a "dog" function.  Notice that there is no indication of inheritance.
function Dog() {

sax1johno

var reverseString = function(stringToReverse) {
  var finalString = "";
  // Our code to reverse the string goes here.
  return finalString;
}

sax1johno

var reverseString = function(stringToReverse) {
  var finalString = []; // I prefer to use arrays instead of strings.
  // loop through the string, starting at the end.
    // push the character at the current index into the finalString array
  // Join the characters in the array into a string and return the string.
}

sax1johno

var reverseString = function(stringToReverse) {
  var finalString = []; // I prefer to use arrays instead of strings.
  // loop through the string, starting at the end.
  for (var i = stringToReverse.length; i > 0; i--) {
    // push the character at the current index into the finalString array
    finalString.push(stringToReverse[i]);
  }
  // Join the characters in the array into a string and return the string.
  return finalString.join('');
}

sax1johno

1. Delete all containers

    $ docker ps -q -a | xargs docker rm
   

-q prints only the container IDs -a prints all containers

Notice that it uses xargs to issue a remove container command for each container ID

2. Delete all untagged images

sax1johno

docker rmi $( docker images -q -f dangling=true)

sax1johno

I just worked out another flow to have Zero downtime (mainly for web apps).

Proxy

We use jwilder/nginx-proxy to handle routing to app servers, this will assist us in dynamically routing requests to services.

First Deploy

For the first deploy run docker-compose --project-name=app-0001 up -d.