Golang

01-Basics

• Go is a compiled language and has different executables for different Operating Systems.

• It is an object oriented programming language but doesn't contain Classes and Objects , rather has Structs instead classes. The concept of overriding and overloading are also not present.

  package main
  
  import "fmt"
  
  func main() {
      fmt.Println("Hello , I am Learning GOLANG !!! ")
  }
  

• package main() is the entry point of the program

• Statically defined types : once a variable type is declared , it is fixed and hence type cannot be changed. Almost Everything in the Golang is a type.

    Types Include:
    1) String                6) Arrays
    2) Boolean               7) Slices
    3) Integer               8) Maps
    4) Floating              9) Structs
    5) Complex              10) Pointers
  
    -- Functions, Channels are types as well
  

• LEXER ensures the rules of Grammar are properly followed. Also takes care of semi-colons ;)

10-Slices

• Slices are similar to vectors in C++. They are much more powerful than arrays in Go.

• Append vs Make

Make : Allocates fixed memory Append : Reallocates new memory, therefore making room for new elements

13-Structs

• Similar to classes in OOP languages
• There is no inheritance in Go, no Super or parent concepts