word definition
control flow “control flow” means same “if/else” or “conditions”

REPL is an abbreviation for read–eval–print loop. It’s a program that loops, or repeatedly cycles, through three different states: a read state where the program reads input from a user, the eval state where the program evaluates the user’s input

read–eval–print loop (REPL), also termed an interactive toplevel or language shell, is a simple interactive computer programming environment that takes single user inputs, executes them, and returns the result to the user

*a read state where it reads the input from a user, *the eval state where it evaluates the user’s input *the print state where it prints out the evaluation to the console.
ex: babel REPL, REPLit

PS C:\Users\ashkan nasirzadeh> node
Welcome to Node.js v14.15.1.
Type ".help" for more information.
> console.log('now you are in javascript REPL:)');
now you are in javascript REPL :)


comparatives same “!=”, “>=”, “<=”, “==”, “&&”, …
invoke The code inside a function is executed when the function is invoked. It is common to use the term “call a function” instead of “invoke a function”. Functions must be in scope when they are called. The scope of a function is the function in which it is declared, or the entire program if it is declared at the top level.
codebase the root of your project for example look at this sentence:
# change directory to codebase
$ cd /file/path/to/code

# make directory a git repository
$ git init


stack A stack is a last-in, first-out list in which only the most recently added item is accessible. You add items to a stack in the order that you use them, and then retrieve them for use in the reverse order.
TCP Transmission Control Protocol
what is d in systemd  httpd  sshd  ipd  d means deamon and it is just a  long-running background process that answers the requests for services
lsb Linux Standard Base (LSB) is a specification that purports to define the services and application-level ABIs that a Linux distribution will provide for use by third-party programs
vpc A Virtual Private Cloud (VPC) is a private network interface for collections of DigitalOcean resources. VPC networks provide a more secure connection between resources because the network is inaccessible from the public internet and other VPC networks. Traffic within a VPC network doesn’t count against bandwidth usage.
TCP Transmission Control Protocol
UDP User Datagram Protocol
TLS Transport Layer Security
SSL  Secure Sockets Layer
SDK Software Development Kit (SDK)
ORM Object-Relational Mapping (ORM)