Usage of T vs auto for variable declaration

#1

why cant we use T instead of auto in the first loop inside print()?

#2

Hello @rohanmd07,

  1. This is because the type of adjList is map not T.
  2. It contains the element of of generic type.
  3. To iterate over the elements of the map you are required to create an iterator of type map as you do in case of vectors and other STL data-structures.

So, you are using auto which will implicitly create an iterator of an appropriate type at compile time. Thus reducing our efforts.

Hope, this would help.
Give a like if you are satisfied.

#3

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