Examples for ***as of***:

> 
> As of yesterday, I've been married 42 years.
> 
> 
> As of the 5th of September I've been speaking Esperanto for seven
>  months.
> 
> 
> 

Examples for ***as in***:

> 
> The last letter is a T, as in "Table".
> 
> 
> How do you say *plain*, as in "It's plain to see"?
> 
> 
>