How Can Git Save My Life?

Before git I think it was really hard to maintain the edit history of text files; really long history. We as programmers should be very grateful that we have such a tool to use in our daily lives. It's very powerful in version control and collaboration with GitHub, and that's why it got really popular.
I hope that I get to be a master of git/GitHub soon.

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Stack vs. Queue

Stack is like a pile of books placed on top of each other. We can add new books to the top and can remove them from only the top because stacks are LIFO which means last-in, first-out. Queues on the other hand are the opposite, which is FIFO meaning first-in, first-out. So adding an element to the queue will be the same but removing will happen to the first element not the last one. An example of a queue would be the wait line in front of any kind of service we see around us like the bus station or the shops,....etc.

Middlewares

Middlewares in Javascript are functions that come in the middle of the request-response cycle. They have access to both the request and the response object as well as the next middleware function to be executed; usually called next(). Popular examples on middleware include: body-parser, cors, session, cookie-seesion and cookie-parser.

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