> PROPOSAL
> Replace the 'if', 'unless', 'when' statement modifiers by identically
> named lowest-precedence left-associative operators that short-circuit
> from right to left.
>
> This means 'FOO if BAR' is identical to 'BAR and FOO', except it has a
> lower precedence, and 'FOO unless BAR' is identical to 'BAR or FOO',
> except it has a lower precedence. FOO and BAR are arbitrary expressions.
> Because of left-associativity, 'FOO if BAR if BAZ' is identical to
> 'BAZ and BAR and FOO'.
>
> 'FOO when BAR' is similar to 'FOO if BAR' except BAR is matched magically
> like the rhs of the ~~ operator and an implicit 'break' occurs if true.
>
> RATIONALE
> 1. it doesn't hurt anything: existing use of the modifiers (now operators)
> remains functionally the same.
> 2. it allows new useful expressions
> 3. it's more consistent ('if' has no reason being more special than 'and')
> 4. it shouldn't make parsing more difficult
It is nice to see someone who puts as much thought into posting as you
do. Unfortunately, your proposal is moot, as we have a definitive
"No, still can't chain them" from Larry.
http://archive.develooper.com/perl6-language%40perl.org/msg09331.html
Luke
