Re: Procedure PR/PI question

One thought - I realize that I almost always use expressions with CONST parameters. The issues of changing a variable apply only when passing only the variable in the parameter.

Maybe there's a way to make a variable into an expression. Does putting parentheses around it make it an expression? Concatenating an empty string would probably do it - or adding 0 to a numeric variable. The latter could be risky, since there are rules about precision and scale that enter in.

Anyhow, just thinking!
Vern

On 5/6/2013 4:25 AM, whatt sson wrote:

If you want to the called procedure to change the parameter data, why
wouldn't you just pass the correct type by reference? There is no
difference in performance between passing a parameter by reference and
passing a pointer by value, but there is a gigantic difference in
maintainability.

You're right.

I just meant that - IF - if performance was not an issue i would use
"value" all the time and - probably - never "const".




On Sat, May 4, 2013 at 5:09 PM, Barbara Morris <bmorris@xxxxxxxxxx> wrote:

On 5/2/2013 5:41 AM, john erps wrote:

So if performance was not an issue at all i would use "value" everytime,
and a pointer with "value" only if i want to pass data back (change the
data from the called procedure).

If you want to the called procedure to change the parameter data, why
wouldn't you just pass the correct type by reference? There is no
difference in performance between passing a parameter by reference and
passing a pointer by value, but there is a gigantic difference in
maintainability.

--
Barbara
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