Re: Securing a future for anonymous functions in Python

[Doug Holton]

Steven Bethard wrote:
Simo Melenius wrote:
map (def x:
         if foo (x):
             return baz_1 (x)
         elif bar (x):
             return baz_2 (x)
         else:
             global hab
             hab.append (x)
             return baz_3 (hab),
     [1,2,3,4,5,6])

I think this would probably have to be written as:
Right the comma plus other things make this difficult for a parser to 
handle correctly.  Other people have already come up with working solutions.

We have a special way to pass a multiline closure as a parameter to a 
function.  Put it outside the parameter list.

First, the single-line way using curly braces:
newlist = map({x as int | return x*x*x}, [1,2,3,4,5,6])
Then the multi-line way.  I had to add an overload of map to support 
reversing the order of parameters (list first, then the closure):

newlist = map([1,2,3,4,5,6]) def (x as int):
     return x*x*x
for item in newlist:
     print item
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