makeInt returns an Either, converted into a ZIO value using ZIO.fromEither in each line of the for-expression. The for-expression showcases ZIO handling with Either seamlessly.
For-expression short-circuits upon encountering an error, exemplified by an input of 'uh oh' leading to a NumberFormatException. Success occurs when correct values are provided.
The example demonstrates the integration of ZIO 2 with Either and ZIO values in Scala for-expressions. Similar techniques apply to Scala Option and Try for error management.