Hi Steven,
As you've seen from all the answers so far, precedence matters with
operators. The Core guide says (in the Math section) that there are just two
rules:
Expressions are evaluated from left to right.
Operators take precedence over functions.
For a long time while I was learning REBOL I basically ignored operators
like +, -, * etc. Instead I used their function equivalents: Add, Subtract,
Multiply. Once I got comfortable with the precedence rules of operators I
started using a mix. Eg.
Add 3 * X 4 * Y
instead of
(3 * X) + (4 * Y)
Every now and then I get the precedence stuff mixed up and instead of
inserting heaps of paren! I revert to using the function style.
Most recently, after Joel's post on coding habits and the effect of changing
them, I've started using a different habit for If conditions more akin to
the other posts.
if x = 4 * Y [...]
Regards,
Brett.
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