function variables question

[Timothy J Luoma <luomat+Lists/Zsh/users@xxxxxxxxxxxxxxx>]

I tend to use the same variable names in a lot of functions, such as 'name='  
or 'short=' or 'for i in '

Should I be doing 'unset name ; unset short ; unset i' at the end of them,  
to keep them from interfering with each other?

TjL