Insert data from a file to a hash

[mikawin]

I have about 500,000 records in a file that I want to insert into a hash table. What is the most efficient way to do this?

Thanks,
Mika

 

[xhonzi]

Something more efficient than:

my %hash;
while (<>)
{
  my($a,$b)=split ",", $_;
  $hash{$a)=$b;
}
?

What's the format of your file?  Does it include the hash key and value?  Does it include things beside the keys and values?

 

[Zhris]

For files that are too large to load into memory, I use the Tie::File module (

http://search.cpan.org/~mjd/Tie-File-0.96/lib/Tie/File.pm).

Chris

 

[mikawin]

Thanks Chris,

Using the module sped things up for me immensely.

~Mika.