C#3.0 and lambdas

[Paul Rubin]

"Fredrik Lundh" <fredrik at pythonware.com> writes:
>     "Is anyone truly attached to nested tuple function parameters; 'def
>     fxn((a,b)): print a,b'?  /.../
> 
>     Would anyone really throw a huge fit if they went away?  I am willing
>     to write a PEP for their removal in 2.6 with a deprecation in 2.5 if
>     people are up for it."

It's not just function parameters, it works in assignments too:

    s = ((1,2), (3,4))
    ... 
    ((x1,y1), (x2,y2)) = s

Why is there such eagerness to remove it?

The corresponding feature in Lisp is called destructuring-bind and
it's quite useful.