On jeu., mars 28, 2019 at 5:00 PM, python-list-requ...@python.org wrote:
On 2019-03-27 10:42 a.m., Paul Moore wrote:
On Wed, 27 Mar 2019 at 12:27, Alexey Muranov
<alexey.mura...@gmail.com> wrote:
On mer., mars 27, 2019 at 10:10 AM, Paul Moore
<p.f.mo...@gmail.com>
wrote:
On Wed, 27 Mar 2019 at 08:25, Alexey Muranov
<alexey.mura...@gmail.com> wrote:
Whey you need a simple function in Python, there is a choice
between a
normal function declaration and an assignment of a anonymous
function
(defined by a lambda-expression) to a variable:
def f(x): return x*x
or
f = lambda x: x*x
It would be however more convenient to be able to write instead
just
f(x) = x*x
Why? Is saving a few characters really that helpful? So much so
that
it's worth adding a *third* method of defining functions, which
would
need documenting, adding to training materials, etc, etc?
Because i think i would prefer to write it this way.
That's not likely to be sufficient reason for changing a language
that's used by literally millions of people.
(Almost no new documentation or tutorials would be needed IMHO.)
Documentation would be needed to explain how the new construct
worked,
for people who either wanted to use it or encountered it in other
people's code. While it may be obvious to you how it works, it
likely
won't be to others, and there will probably be edge cases you
haven't
considered that others will find and ask about.
For what it's worth, if I encountered "f(x) = x * x" in code, my first
thought would be that Python somehow added a way to return an
assignable
reference from a function, rather than this being an anonymous
function
declaration.
So documentation of that syntax would 100% be required
Alex
The thing to the right of the assignment symbol represents a value (an
object), but the thing to the left does not represent a value, it
represents a place for a value.
What would an "assignable reference" mean? Say, variable "x" holds an
"assignable reference", what can be done next?
Alexey.
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