Dear Monks

I have a dataset with columns and I want to evaluate a statement on each of the rows in the data. I can do this pretty easily. Loop

through each column, check if the column exists in the evaluation statement. If it does, replace the column name with the value

and do the evaluation. I can easily do this using regular expressions. Just curious how a true perl monk would approach this.

#!/usr/bin/perl
use strict;
use warnings;

my $row = {
a => 1,
b => 2,
c => 3,
d => 4
};

my $evalStatement="a>0";

sub evaluateRow { 
   my ($row) = @_;

## loop through each column a,b,c,d and if column exists in the evalua
+tion statement
## replace column with value

  if (eval(1>0)) {
     return 1 ## "ACCEPT row"
  } 
  
  return 0 ## "REMOVE row"
}

[download]

Thank you !!

In reply to column replacement evaluation on dataset by Anonymous Monk

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