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Postings from July 2014
On 24 July 2014 22:15, Abigail <abigail@abigail.be> wrote:
> On Fri, Jul 25, 2014 at 07:27:34AM +1200, Kent Fredric wrote:
>> On 25 July 2014 05:13, Ricardo Signes <perl.p5p@rjbs.manxome.org> wrote:
>>
>> > I like the feature, but I think it might be too small a change to pick up
>> > a new
>> > operator. What about a pragma/feature?
>> >
>>
>> +1 on pragma/featurizing it.
>>
>> I'm half of the mind that <> allowing pipe opens constitutes a kind of bug
>> in itself.
>>
>> So a lexical pragma that turns on/off that behavior seems more sensible
>> than new syntax, and once we do that, we can discuss whether or not the
>> pragma should default on/off somehow in a future perl.
>
>
> -1 here.
>
> People don't like magic open because you can't see what you're getting.
>
> Disabling this with a feature means, you're disabling it with something
> you don't see.
>
>
> while (<>) {
> ... # Magic open or not?
> }
Ah, yes, I meant to mention that as well.
> Whether or not it's a magic open is something you can't see locally.
> You'd have to scroll the file to see whether a feature is active or not.
>
> while (<<>>) {
> ... # Obvious
> }
>
>
>
> Note 1: I'm well aware this is not something specific about <>/<<>>, but
> that it's general uneasyness I have with features (or pragmas)
> controlling behaviour. It's often too much "action in a distance"
> for my liking. (Pragmas also means that whenever you explain something
> about a construct, you always have to put a disclaimer there about
> the pragmas affecting the construct -- it doesn't make it easier
> to learn or teach the language).
>
> Note 2: Having said that, to eliminate the magicness of open(), we got
> 3-arg open(), instead of controlling it with a pragma.
But then you miss the magicness of the ARGV filehandle.
> Note 3: (To ease the feeling of the pumpkin): Instead of seeing '<<>>' as
> a new operator, just see it as the '<>' operator with a special
> cased operand.
>
>
> Abigail
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