• Implementing sqrt() using newton’s method:

• GO’s switch case format is similar to C, C++ etc. But one thing that sets it apart is it only runs the selected part, not the cases that follow.

• In switch a condition is same as switch true . Clean way to write long if-else statements.

• A defer statement defers the execution of a function until the surrounding function returns. Deferred function calls are pushed onto a stack. When surrounding function returns, deferred calls are executed in LIFO order

More Types - structs, slice and maps

Structs

• Pointers in GO are just like they are in C++, but without pointer arithmetic. Zero value of pointer in GO is nil

• A struct is like a structure in C++. To access fields of a struct . notation is used. It allows us to use pointer as a variable without dereferencing [in terms of notation]

• Example of struct literal. These are nothing but variables of particular struct type.

Array

• The expression var a [10]int declares a as an array of ten integers.

Slice