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

by tachyon (Chancellor)
on May 21, 2001 at 05:44 UTC ( [id://81919]=note: print w/replies, xml ) Need Help??

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in reply to 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

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 06:00 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]
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