Assignment versus binding
Steve D'Aprano
steve+python at pearwood.info
Tue Oct 4 12:44:25 EDT 2016
On Tue, 4 Oct 2016 11:27 pm, Ben Bacarisse wrote:
> Haskell defines let (it's version of multiple mutually recursive
> bindings) in terms of the least fix point of a lambda function whose
> (pattern) parameter binds the expressions in the definitions.
It binds *the expression* itself? Not the value of the expression?
So Haskell uses some form of pass by name?
And (shamelessly using Python syntax) if I have a function:
def spam(x):
print(x)
print(x+1)
and then call it:
spam(time.sleep(60) or 1)
it will sleep for 60 seconds, print 1, then sleep for another 60 seconds,
then print 2. Is that right?
--
Steve
“Cheer up,” they said, “things could be worse.” So I cheered up, and sure
enough, things got worse.
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