>>>>> "Frans" == Frans Englich <[EMAIL PROTECTED]> writes:
Frans> Hello,
Frans> Since Python doesn't have static typing, how is the same
Frans> result as traditional function overloads results in
Frans> acheived? With function overloads the "selection of code
Frans> path depending on data type" is transparent and automatic
Frans> since the typing system figure out what goes to what.
Frans> But in Python, when one wants to be able to pass different
Frans> data types into a single "entry point" for functionality,
Frans> how is that best done? To in a function do an if statement
Frans> with the type() function?
Using type or isinstance is one way to do it. The other way is "duck
typing". If it walks like a duck and talks like a duck, it probably
is a duck. The core idea is that we care less about what type an
object is, and more about what services the object provides. Eg
def myoverload(x):
try: noise = x.quack()
except AttributeError: # do something else...
else: # do something with noise
Variants to the try/except approach include hasattr, getattr and so
on..
googling python duck typing should speed you on your way.
JDH
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