I'm probably missing something but it seems to me you are making life hard by calculating that running total or whatever it is?

Why not just store the original first value and the deltas? 

#! perl -w
use strict;

sub decode {  my $val; return map { $val += $_ } @_; }

my @input = qw( 1000 1 -21 44 -1 );
my @output = decode @input;
print "@output", $/;
__END__
C:\test>190239
1000 1001 980 1024 1023

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What's this about a "crooked mitre"? I'm good at woodwork!

In reply to Re: Perl Drag Racing - sum/delta list by BrowserUk
in thread Perl Drag Racing - sum/delta list by John M. Dlugosz

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