Re: why use "let str = a:str" in a function

On Sep 21, 3:30 pm, "Israel Chauca F." <israelvar...@fastmail.fm>
wrote:
> On Sep 21, 2010, at 5:02 PM, Bee wrote:
>
> > why use "let str = a:str" in a function
>
> > Looking at some functions, I have seen "let str = a:str"
>
> a:vars are read-only, read  :h a:var  for more details.

Thank you, I missed the read-only part when reading about a:var

The :help a:var does say "However, if a |List| or |Dictionary| is
used, you can change their contents."

I found this example function. Is {a:var} now a Dictionary?

function! Inc(var)
let {a:var} += 1
return {a:var}
endfunction

Is one better than the other?

function! Inc(var)
let var = a:var
let var += 1
return var
endfunction

-Bill

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