Re: Re: vote on := for assignments and in expressions

--- Laurent Dube <[email protected]> wrote: > Mark
Hahn wrote:
> 
>  > Since using := for assignment everywhere was not
> a choice in the original
>  > voting, I want to start a new vote on that issue.
>  Please vote FOR or
>  > AGAINST changing the symbol = to := for the
> assignment statement and
>  > allowing it to be used in expressions also.
> 
> I'm FOR changing the symbol = to := for the
> assignment statement.

Me too. = being used in python (and C) was always a
pet peeve for me. (maybe because I learnt pascal
before C? :-/). This would make for:

:= for assignments (takes on/points to value?)
== for 'have same value' test
!= for 'not have same value' test

While we're at it, is = or == better for the
conditional test? I've got a slight preference for =
since this is what's used in math.

> I'm FOR allowing it to be used in expressions also.
> It's not my style to use it, but the meaning will
> remain clear
> 
> Now, check this out. How about function defs and
> function calls?
> Do we use ":=" for defaults?
> 
>    def func(x, y:=11, z:=12)  # with default values

I think not. In this case, y and z are not assigned
the values 11 and 12. Maybe:

def func(x, y:11, z:12):
    pass

> What do we use for keyword-matched arguments in
> function calls?
> 
>    func(y = 1, z = 2, x = 3)
> or
>    func(y:= 1, z:= 2, x:= 3)

I think when calling,

func(3, y:= 1, z:= 2)

is more consisent as this is a real 'assign value to
varname' (or point varname to value if you prefer)

> How is that not be interpreted as assigning a value
> to local variable y
> and then passing that value to the first argument x?

I thought we aren't implemeting assignment as
expression? (I am AGAINST that btw.)

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