This code is illegal in Go item := item item := item "no new variables on left side of :=" You can't declare the same variable twice in the same scop

This code is illegal in Go item := item item := item "no new variables on left side of :=" You can't declare the same variable twice in the same scope. item := item works only because it declares a new variable in the current scope, initialized with a variable with the same name (but different variable) from the outer scope. Go distinguishes declarations from assignments. In this example, the second assignment is a no-op indeed. item := item item = item