[REBOL] Re: Get name of actual function?
From: joel::neely::fedex::com at: 17-Dec-2002 11:34
Hi, Robert,
This is a question that comes up every now and then. Functions
don't have "actual names". Legacy languages such as c or vb may
fix
the relationship between names and functions at compile time,
but that concept doesn't exist in REBOL.
The other side of the coin is that you could add a /name refinement
to a function you are defining yourself; that refinement could return
whatever value you wish, for whatever purpose you wish.
See below for standard rant. ;-)
-jn-
Robert M. Muench
wrote:
> Hi, is there a way to find out the name of the actual executed function?
>
> test: func[][
> print actual-function-name
> ]
>
> The output should be "test". Robert
>
What if we had this?
gleep: florp: test: func[][
print actual-function-name
]
Then what if any one (or more) of those words (GLEEP, FLORP, or TEST)
were redefined?
Since functions are first class *values* in REBOL, asking a function
What variable(s) currently refer to you?
is just as (not) meaningful
as asking the integer 2 the same question. In addition, it is quite
possible to have (and use) a function when there is *no* answer to
that question (there are no variables/words/names for the function).
What if we had this?
do pick reduce [
func [] [
print actual-function-name
print "Two"
]
func [] [
print actual-function-name
print "Four"
]
func [] [
print actual-function-name
print "Eight"
]
func [] [
print actual-function-name
print "Sixteen"
]
] 2
There are no user-defined words at all in the above, yet it can be
evaluated with no problem in REBOL (if we provide some definition for
the word ACTUAL-FUNCTION-NAME, that is... ;-).
--
----------------------------------------------------------------------
Joel Neely joelDOTneelyATfedexDOTcom 901-263-4446
