Re: How do I take a slice of a hash reference?

All that is wrong with your code is the parenths. Join takes a list ie: join '', (list); To give list context to your hash slice all we need to do is move the parenths as shown, this runs fine.

Note that we do not need parenths for the array at all.

my $arr =  [1,'a',2,'b'];
my $hash = {1,'a',2,'b'};
print join ':', @$arr[1,2];
print join ':',(@$hash{1,2});
[download]

tachyon

Comment on Re: How do I take a slice of a hash reference? Download Code

Replies are listed 'Best First'.
Re: Answer: How do I take a slice of a hash reference? by tachyon (Chancellor) on May 21, 2001 at 10:00 UTC
Wrong button, especially with a missing </code> Scorn pours forth like a raging torrent.... All that is wrong with your code is the parenths. Join takes a list ie: join '', (list); To give list context to your hash slice all we need to do is move the parenths as shown, this runs fine. `my $arr = 1,'a',2,'b'; my $hash= {1,'a',2,'b'}; print join ':', @$arr1,2; print join ':',(@$hash{1,2});` [download] Note that we do not need parenths for the array at all. tachyon	[reply] [d/l]

Replies are listed 'Best First'.

Re: Answer: How do I take a slice of a hash reference?
by tachyon (Chancellor) on May 21, 2001 at 10:00 UTC

Wrong button, especially with a missing </code> Scorn pours forth like a raging torrent....

All that is wrong with your code is the parenths. Join takes a list ie: join '', (list); To give list context to your hash slice all we need to do is move the parenths as shown, this runs fine.

my $arr = 1,'a',2,'b'; 
my $hash= {1,'a',2,'b'}; 
print join ':', @$arr1,2; 
print join ':',(@$hash{1,2});
[download]

Note that we do not need parenths for the array at all.

tachyon

[reply]
[d/l]