Re: Re: Modify language grammar to allow trailing commas in function/method calls

2008/7/22 Rodrigo Saboya <rodrigo.saboya@bolsademulher.com> > Evan Priestley escreveu: > >> This was floated in 2003 but had weak advocation and didn't seem to come >> to a decisive resolution: >> >> >> http://marc.info/?l=php-internals&m=106685833011253&w=2 >> >> Basically, the proposal is to modify the grammar to allow trailing commas >> in function and method calls, so this becomes a parseable PHP construct: >> >> f(1, 2, 3,); >> >> This patch applies only to function and method calls; it does not apply to >> function or method definitions. It also does not allow the degenerative case >> of "f(,)". >> >> The real value of relaxing this rule is in nontrivial cases that span >> across multiple lines: >> sprintf( >> 'long example pattern with %d conversions: %s', >> $several, >> $conversions >> ); >> >> > You could just do this: > > sprintf( > 'long example pattern with %d conversions: %s' > ,$several > ,$conversions > ); > > I really don't see a great benefit here, and as you pointed out it would > make code written with trailing commas incompatible with previous versions > of PHP. > > -- > Rodrigo Saboya > > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > > Just thinking of other languages that allow you to skip params simply by using commas. Whilst this isn't supported in PHP, allowing a trailing comma and skipped parameters could look quite interesting! foo(,,,,,,,); I must admit, I get stung with this in JS when I'm building AJAX option sets through Prototype for IE (I think like arrays in PHP which allow trailing ,), but I soon learned to do it properly. I don't see this as a huge advantage. Regards, Richard Quadling. -- ----- Richard Quadling Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 "Standing on the shoulders of some very clever giants!"