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  2. RPG400-L
  3. July 2008

Re: Simplest way to set a date as the first of the current month.

On Sun, 2008-07-06 at 22:28 +1000, Simon Coulter wrote:
On 06/07/2008, at 9:41 PM, Terrence Enger wrote:

Does RPG guarantee that an expression is evaluated left-to-right? You
relieve my unpleasant twinge of doubt by writing explicitly ...
lastOfMonth = ( firstOfMonth + %months(1) ) - %days(1);


Yes. Like most (if not all) modern programming languages. Read about
operation precedence in the Reference. Addition and subtraction are
6th in the hierarchy and are evaluated left-to-right.

Right you are.

Don't confuse operator precedence with operand evaluation.

That is exactly the mistake I was making.

"Interesting", isn't it, that
%diff( %timestamp() : $timestamp() : *msseconds )
could theoretically be positive or negative.

Thanks,
Terry.



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