On 09/28/2010 09:31 PM, Darren Duncan wrote:
Alvaro Herrera wrote:
What about
FOR EACH var IN array_expr LOOP ...
I think this requires reserving EACH, which could cause a regression for
working code. Maybe there's a way to make it work?
Code that quotes all of its identifiers, such as with:
FOR EACH "var" IN "array_expr" LOOP ...
... would also gain a significant amount of future-proofing since then
the language can add keywords at will, without there being conflicts
with user-defined identifiers.
Similarly, quoting identifiers also carries present-day advantages as
then one can name identifiers whatever is most suitably descriptive
for them without worrying whether the language has a pre-defined
meaning for the used words.
The quoting also has the nice bonus of making them case-sensitive.
This doesn't help in the least if the array is an expression rather than
simply a variable - we're not going to start quoting expressions.
cheers
andrew
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