Re^3: Using a Hash Variable in an If Statement

it means print each value for the hash referenced at $data{$name} (which would look like this in a data dump (data{APRL} => 7.1963). $_ is a special variable which references the current element. This is the same thing

foreach my $line (@{$data{$name}}) {
    #do something
}
[download]

Where $line is the same thing as $_, more than 1 way to skin a cat. So it's say print out the hash value of the specified key and also print a new line with it so everything won't be bunched up on a single line. Hope that makes sense.

Comment on Re^3: Using a Hash Variable in an If Statement Download Code

Replies are listed 'Best First'.
Re^4: Using a Hash Variable in an If Statement by Bama_Perl (Acolyte) on May 11, 2015 at 22:15 UTC
OK that makes a lot of sense. One final question. Do you have an idea about how to print each each number (and its respective times) to a different column, using sprintf? Ideally I'd like to read these values into Matlab, and if I could create a column separating each number (1,2...15) with each time, that would save time rather than using Excel. Thanks for all of your help.	[reply]
Re^5: Using a Hash Variable in an If Statement by 2teez (Vicar) on May 12, 2015 at 00:04 UTC
One final question. Do you have an idea about how to print each each number (and its respective times) to a different column, using sprintf? You can use the documentation that comes with your perl installation like so: `perldoc -f sprintf` from your CLI and read all about it. Try out what you have read and if you are still having problems with it, post such. The answer you seek is just right on your keyboard. :) If you tell me, I'll forget. If you show me, I'll remember. if you involve me, I'll understand. --- Author unknown to me	[reply] [d/l]
Re^5: Using a Hash Variable in an If Statement by edimusrex (Monk) on May 12, 2015 at 00:45 UTC
If you wanted to print to a csv file it can be done easily. Basically redirect all print statements to output Example : `open my $out, ">", "rat.csv" or die "Can't write file:$!"; for my $name (@names) { print $out "$name,"; for (@{$data{$name}}) { print $out "$_,"; } print $out "\n"; $i++; } close($out);` [download] That should give you a nice CSV which would open nicely in any text editor but more importantly Excel	[reply] [d/l]
Re^6: Using a Hash Variable in an If Statement by 2teez (Vicar) on May 12, 2015 at 02:26 UTC
If you wanted to print to a csv file it can be done easily... Yes! but not manually. Ask either Text::CSV or Text::CSV_XS to do it for you! If you tell me, I'll forget. If you show me, I'll remember. if you involve me, I'll understand. --- Author unknown to me	[reply]