Shadowing

• Variable in the inner scobe hides the variable in the outer scope
• Here’s an example

offset := 0

for ;; {
  read, offset, err := readFromOffset(offset)

   if read == 0 {
     break
   }
}

• Here offset declared in the inner scope is shadowing the value in the outer scope
• So the intent here is each time readFromOffset is called it should read from the last offset
• But since offset is shadowed, it will always read from 0

echo "hello"