Bryan Olson <[EMAIL PROTECTED]> writes:
> [EMAIL PROTECTED] wrote:
> > There are already anonymous functions in Python.
> > lambda x, y, z: x + y + z
> > is the same as:
> > def _(x, y, z): return x + y + z
>
> They are the same only in special cases:
> The special identifier "_" is used in the interactive
> interpreter to store the result of the last evaluation...
I'm not sure what Chris was really getting at, since among other
things lambda:... is an expression while def... is a statement.
But Python certainly has anonymous functions without lambda:
def compose(f,g):
def h(*a, **k):
return f(g(*a, **k))
return h
x = compose(math.sin, math.cos)(1.0)
computes sin(cos(1.0)) where a function equivalent to
lambda x: sin(cos(x))
is constructed and used without being bound to a symbol.
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