The code: 
use foo qw/bar $baz/;

[download]
is the same as: 
# Do this at compile time....
BEGIN {
  # load if needed
  require foo;
  # import functionality
  foo->import('bar', '$baz');
}

[download]
Most errors (not this one, but most) where a require did not do what a use would are missing the import.

UPDATE
As merlyn points out, if your require does not match what you expected from use, and it wasn't a missing import, then likely you need the BEGIN block. Or else (as in this case) it is an unrelated mistake and the use wouldn't have worked either.

In reply to Re (tilly) 1: require & $main::variables by tilly
in thread require & $main::variables by physi

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