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Postings from February 2012
On 5 February 2012 22:33, Ronald J Kimball <rjk@tamias.net> wrote:
> On Sun, Feb 05, 2012 at 07:46:55PM +0100, demerphq wrote:
>> On 5 February 2012 19:27, Tom Christiansen <tchrist@perl.com> wrote:
>> > But why mention /ee distinct from /e? It's not special.
>> > You can have /eee and /eeee if you want. eeeeetc.
>>
>> Yes I know, but /ee and /eeee are synonyms. And /ee *is* distinct from
>> /e. See the docs for more details.
>
> /ee and /eeee are not synonyms. /ee performs two evals; /eeee performs
> four.
I stand corrected, thanks for pointing that out, I definitely did not know that.
$ perl -wle'sub foobar{"zoo"}; sub zoo { "giraffe" }; $_=qq("foo");
$x=qq(. "bar"); s/("foo")/$1 . $x/; print'
"foo" . . "bar"
$ perl -wle'sub foobar{"zoo"}; sub zoo { "giraffe" }; $_=qq("foo");
$x=qq(. "bar"); s/("foo")/$1 . $x/e; print'
"foo". "bar"
$ perl -wle'sub foobar{"zoo"}; sub zoo { "giraffe" }; $_=qq("foo");
$x=qq(. "bar"); s/("foo")/$1 . $x/ee; print'
foobar
$ perl -wle'sub foobar{"zoo"}; sub zoo { "giraffe" }; $_=qq("foo");
$x=qq(. "bar"); s/("foo")/$1 . $x/eee; print'
zoo
$ perl -wle'sub foobar{"zoo"}; sub zoo { "giraffe" }; $_=qq("foo");
$x=qq(. "bar"); s/("foo")/$1 . $x/eeee; print'
giraffe
I do wonder if this is intentional or an interesting implementation side effect.
Yves
--
perl -Mre=debug -e "/just|another|perl|hacker/"
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