Error description: recursionLimit: Recursion limit reached

[James Spencer]

On Aug 7, 2005, at 4:52 PM, Hershel Fisch wrote:

> Hi all what is the meaning for this error "Error description:
> recursionLimit: Recursion limit reached"
> Thans, Hershel
>
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Recursion is when a function (or handler in the case of Rev) calls  
itself.   There are many situations where recursion is a pretty good  
way to solve a problem, the classic example being calculating a  
factorial which can be calculated as:

function factorial number
if number <= 1 then
     return 1
else
     return number * factorial(number - 1)
end if
end factorial

The error message arises because each time you recurse, information  
is stored in the memory of the computer so it can no how to return  
back up the chain once it gets to the beginning (where number = 1 in  
the example).  Obviously, there is a limit to how many times you can  
call factorial() without breaking the program.  The actual limits are  
variable depending on the parameters passed etc.

More typically, the problem arises because you accidentally have a  
handler that is calling itself in an endless loop.

Spence

James P. Spencer
Rochester, MN

jspencer78 at charter.net

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