Software Development Tricks

Thursday, May 12, 2016

how to install google chrome on ubuntu

To install Google Chrome, run the following:

sudo apt-get install libxss1 libappindicator1 libindicator7
wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
sudo dpkg -i google-chrome*.deb

For 32-bit systems user can use this code:

sudo apt-get install libxss1 libappindicator1 libindicator7
wget https://dl.google.com/linux/direct/google-chrome-stable_current_i386.deb
sudo dpkg -i google-chrome*.deb

How to Encode and Decode Strings with Base64 in JavaScript

Internet Explorer 10 and above

// Define the string
var string = 'Hello World!';

// Encode the String
var encodedString = btoa(string);
console.log(encodedString); // Outputs: "SGVsbG8gV29ybGQh"

// Decode the String
var decodedString = atob(encodedString);
console.log(decodedString); // Outputs: "Hello World!"

Cross-Browser Method (compressed)

// Create Base64 Object

// Define the string

var string = 'Hello World!';

// Encode the String

var encodedString = Base64.encode(string);

console.log(encodedString); // Outputs: "SGVsbG8gV29ybGQh"

// Decode the String

var decodedString = Base64.decode(encodedString);

console.log(decodedString); // Outputs: "Hello World!"

Tuesday, May 10, 2016

How to convert comma-separated String to ArrayList?

Here is another one for converting CSV to ArrayList:

List<PageData> pages = new ArrayList<PageData>();
                
if (data.getPageName() != null) {
   String pageNames=data.getPageName();
   String pageIds=data.getPageId();
   List nameList= new ArrayList(Arrays.asList(pageNames.split(",")));
   List idList= new ArrayList(Arrays.asList(pageIds.split(",")));
                    
   for(int i=0;i<nameList.size();i++){
                        
      long layoutId = Long.valueOf(idList.get(i).toString());
      PageData pD = new PageData();
                        
      pD.setName(nameList.get(i).toString());
      pD.setLayoutId(layoutId);

      pages.add(pD);
   }
}

git replace local version with remote version

This is the safest solution:

git stash

Now you can do whatever you want without fear of conflicts.

For instance:

git checkout origin/master

If you want to include the remote changes in the master branch you can do:

git reset --hard origin/master

This will make you branch "master" to point to "origin/master".

Revert single file:

git checkout origin/master <file location>

Monday, February 1, 2016

Create a new branch with git and manage branches

In your github fork, you need to keep your master branch clean, by clean I mean without any changes, like that you can create at any time a branch from your master. Each time, that you want to commit a bug or a feature, you need to create a branch for it, which will be a copy of your master branch.

When you do a pull request on a branch, you can continue to work on another branch and make another pull request on this other branch.

Before creating a new branch pull the changes from upstream, your master needs to be up to date.

Create the branch on your local machine and switch in this branch :

$ git checkout -b [name_of_your_new_branch]

Push the branch on github :

$ git push origin [name_of_your_new_branch]

When you want to commit something in your branch, be sure to be in your branch.

You can see all branches created by using :

$ git branch

Which will show :

* approval_messages
  master
  master_clean

Add a new remote for your branch :

$ git remote add [name_of_your_remote]

Push changes from your commit into your branch :

$ git push origin [name_of_your_remote]

Update your branch when the original branch from official repository has been updated :

$ git fetch [name_of_your_remote]

Then you need to apply to merge changes, if your branch is derivated from develop you need to do :

$ git merge [name_of_your_remote]/develop

Delete a branch on your local filesystem :

$ git branch -d [name_of_your_new_branch]

To force the deletion of local branch on your filesystem :

$ git branch -D [name_of_your_new_branch]

Delete the branch on github :

$ git push origin :[name_of_your_new_branch]

If you want to change default branch, it's so easy with github, in your fork go into Admin and in the drop-down list default branch choose what you want.