Perl's lack of 'in' keyword

Iain Barnett iainspeed at
Thu Oct 9 01:39:02 BST 2008

On 9 Oct 2008, at 12:59 am, Paul LeoNerd Evans wrote:

> Perhaps a better comparison may be
>   my $foo = $a + $b[5];
> and
>   add scalar a to the fifth element of array b and assign to new  
> scalar
>     foo

How about...?

foo = a + b[5]

The $@% etc signs are misplaced in modern perl (which is shown  
through Ruby's better use of them). A lot of the braces and brackets  
and ; could all be (to a large extent) kicked out of the language.  
Ruby manages it. Haskell manages it. C# is getting closer to it. I  
don't know more than a drop of Python but it looks cleaner (from a  
distance). Why keep in a load of stuff just because it was there in  
version 4 and just because a (new language) version called Perl6 may  
be completed soon.

> but then does it really buy all that much?

For me, it says what I mean vs doing what I mean, which is why a lot  
of projects choose other languages which may be more verbose or "less  
expressive", but ultimately are easier to read than perl.

if $a ~~ $b	#this could mean several things

if $a in $b		#it is clear what this means

if a in b		#this is even better IMO


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