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Postings from October 2009
On Fri, Oct 30, 2009 at 06:59:23PM -0400, George Greer wrote:
>> On Fri, Oct 30, 2009 at 8:33 AM, John Peacock
>> <john.peacock@havurah-software.org> wrote:
>> On 10/28/2009 12:14 AM, George Greer wrote:
>> $ ./perl -e 'if 0 { print "hi!\n"; }'
>> $ ./perl -e 'if 1 { print "hi!\n"; }'
>> hi!
>> $ ./perl -e '$a{test} = 1; if $a{test} { print
>> "hi!\n"; }'
>> syntax error at -e line 1, near "; }"
>>
>>
>> A) You didn't tell us what version of Perl you are testing with...
>> B) You are not testing what you think you are testing
>>
>> Try this instead:
>> ./perl -e '$a{test} = 1; if ($a{test}) { print "hi!\n"; }'
>> hi!
>>
>> Those parentheses are not optional. In fact, I can't execute your
>> first two examples without getting a syntax error as well:
>>
>>
> On Fri, 30 Oct 2009, Eric Brine wrote:
>> His post wasn't clear, but given the result from the first two tests, it
>> looks like he's working on making them optional.
>
> Yes, exactly. The arrow-less subscripting shortcut is biting me though
> because you can legally write:
>
> $hash {one} {two} {three} = 1;
>
> which makes the grammar/tokenizer have a hard time deciding where to
> start a block versus a hash in the ()-less 'if'. The existing logic to
> decide what's a block and what's a hash (S_intuit_more) isn't exactly
> straightforward but it works for the existing cases.
The most important reason I've no interest in Perl6, up to the point I'm
more likely to become a Java programmer than to ever write a Perl6 program
is that Larry forbid the usage of white space between '$hash' (or should I
say '%hash'?) and its subscript. A curly brace preceeded by whitespace is
always a block in Perl6.
He did this to be able to leave the parens of an if.
Abigail
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