Go

Setting up

• For Ubuntu: Look here
• For MacOS: Look here
• Apart from above tutorial, add the following to your .bashrc:

              export GOBIN=$GOPATH/bin

• All your code (across projects) goes into one folder. So have your environment variables set up specific to where your code is.
• bin stores executables, pkg stores external packages, src has all your source code.

Basics

• The documentation is very well written. You're all advised to go through it.
• The Golang book is an absolute must for you to understand the fundamentals of Go.
• Similar to C
• All referred code is up on this repository.
• Hello world program
• Defining packages
  • Functions inside a package must start with a capital letter. Or else they won't be accessible outside the package.
  • Each package must consist of a directory along with a .go file of the same name inside the directory.
• Installing third party packages; use go get. An example:-

        go get -u -v gopkg.in/mgo.v2

• Packages used in this tutorial -

              go get -u -v github.com/gin-gonic/gin
              go get -u -v github.com/jinzhu/gorm
              go get -u -v github.com/jinzhu/gorm/dialects/sqlite
              go get -u -v github.com/gin-contrib/cors

• To run a program:-

              go run file.go

React

Setting up

• First, install node. Then install yarn (because npm is not very nice)
• Ubuntu:

              curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
              sudo apt-get install -y nodejs
              npm install -g yarn
              yarn global add create-react-app

• MacOS:

              brew install node
              npm install -g yarn
              yarn global add create-react-app

• Then, create a new React application by running the following:

              create-react-app name_of_app

• You can run the app by running yarn start
• node_modules contains all your external packages.
• package.json is a json file that contains all the environment requirements of your project. It is similar to the requirements.txt file we saw for python.
• public stores some static content. The index.html file is going to render whatever code you write. You will need to change that based on your application's design.
• bash yarn build builds your code into a production ready application. The contents are stored in the build directory.
• src contains all of your code. This should follow a good directory structure. Read more into it over here.
• Alternate structure to follow can be found here