day04.md

Why use nested loops instead of single loop?

• I think when we have matrix kinda structure and we want to go through it and do some operation we have to use nested loops
• when you have multiple dimensions you have to use nested loop , single loop not gonna help

Difference between normal loop and range

• normal loop -> Its a traditional way to access the data works well for most of the things but you should have the clear understanding of the types and all

• range -> generally these range loops used by certain predefined data structures, it give ease to you that you can have the value as well as index. These range loop mostly used in the backend dev, like when you want to take data from the db you dont the length but you have the structure.

What is string indexing?

• indexing means you trying to index that particular block from the memory you have defind

  b = [v1 v2 v3 v4 v5] v1 - 0, v2 - 1, v3 - 2, v4 - 3, v5 - 4

• when you want to access the data you have in the data structure you have to use indexing for sure.
  • value = b[0] -> v1 like that
• talking about string indexing its same (golang has something different for the string)
  • str = "test" -> its string of ascii values when u try to access them
    • str[0] -> ascii value of t
    • you have to use either string(str) or convert the each str char using rune

Why do we convert string(name[i])?

• the thing is that name := "test" it is string but when u try to access name[i] it is in ascii so you have to convert back then complete name -> string(name)