Hm, somehow I missed that. Given the extra bit of data you supplied, I might recommend the use of List::MoreUtil's firstidx and lastidx functions. The fact that it's XS ought to help with the speed. 

# for clarity...
my $result;
my $src = $matches{$fasta_id}{$sitekey};

# Use a slice and firstidx/lastidx to copy the range of values
@newArray = @$src[ 
   (firstidx {$_ >= $lowerlimit} @$src )..(lastidx {$_ <= $upperlimit}
+ @$src)
];

$result = \@newArray;

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<–radiant.matrix–>
Ramblings and references
The Code that can be seen is not the true Code
I haven't found a problem yet that can't be solved by a well-placed trebuchet

In reply to Re^3: Help tightening up a subroutine please by radiantmatrix
in thread Help tightening up a subroutine please by mdunnbass

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