Hi again,
This is the last in the series of symbolics related emails today. :)
I'm looking for comments to trac #5607, which has this summary:
In a comment to #5413 Jason pointed out the following confusing
behavior:
sage: g(x)=sin
sage: g(3)
sin(3)
sage: g(x)=sin+x
sage: g(3)
sin + 3
sage: g(x)=sin+cos; g(3)
sin + cos
I think the syntax for this should be:
sage: g(x) = sin(x) + 3
sage: g(3)
sin(3) + 3
sage: g(x) = sin(x) + cos(x)
sage: g(3)
sin(3) + cos(3)
Since it is not clear which variable to use if only sin is specified.
Also consider this situation:
sage: g(x,y) = sin + y
sage: g(3,4)
???
We have two options:
* We could allow this syntax for convenience:
sage: g(x) = sin + x
and convert the function arguments to appropriate callable expressions
if the number of arguments of g match the number of arguments of the
given function, raise an error otherwise.
* We raise an error whenever a function object is specified without
variables.
Comments?
Cheers,
Burcin
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