Fate of lambda, Functional Programming in Python...

[Reinhold Birkenfeld]

Jeff Sandys wrote:

> | > > Hi,all
> | > >    I have a list like [(id,string),...],for example:
> | > > 
> | > >    [(1,'xxxxx'),(7,'ppppp'),(4,'gggggg'),...]
> | > > 
> | > >    I want to sort this list according to the id of each element. 
> | > >    After sorting,the list will become:
> | > > 
> | > >    [(1,'xxxxx'),(4,'gggggg'),(7,'ppppp')...]
> | >
> | > list.sort sorts tuples by first argument, then second &c. If you
> want
> | > a custom sort order, look at the decorate-sort-undecorate pattern.
> | 
> |  Or if you want to sort only on your Id, use a lambda:
> |  l.sort(lambda x,y: cmp(x[0],y[0]))
> | 
> |  To force sorting on just the nth element of the tuples, replace 0
> with 
> |  n in the above.
> |
> 
> I think that lambda should be unlimited and expanded.  It already has
> the 
> colon, block delimiter, so allow lambda to be a multistatement and
> multiline
> indented block!

So in what point exactly is this different from a def(), then?

Reinhold

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