[Python-ideas] One more time... lambda function <--- from *** signature def.

[Nick Coghlan]

On 1 March 2014 13:46, Steven D'Aprano <steve at pearwood.info> wrote:
>
> Something perhaps like a thunk might be appropriate? We can *almost* do
> that now, since Python has a compile function:
>
> thunk = compile("x + 3", "", "eval")
> # much later
> eval(thunk)

FWIW, I think this is why PEP 312 (simple implicit lambda) garnered
any interest at all: sure, you can't pass such a lambda any arguments,
but it works fine as a *closure*.

It's also potentially worth trawling the python-ideas archives for the
various discussions about deferred and delayed expressions - they're
generally all variants of the same basic idea, a less esoteric, easier
to learn way to handle one-shot callbacks and other forms of lazy
expression evaluation. The "lambda" keyword in the current syntax ends
up being a distraction rather than an aid to understanding.

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia