comment on

None of the code you've posted so far uses Dumper, so seeing all this output from Dumper doesn't help much, since we can't tell what's being Dumped.

If you haven't tried using the perl debugger on this yet (putting perl -d at the start of the command line when you run your script), that's probably what you should do next. Set a break point at the line that causes the error, so that the debugger stops and prompts for input from you when it reaches (but has not yet tried to execute) that line.

When you reach the breakpoint, look at the value of $intersection, and confirm whether or not your hash has a matching key. (According to the error message, it doesn't). Then figure out why $intersection has the value that you see, and/or why the hash doesn't have that as a key.

In reply to Re^3: Tie::DBI works in one script... not the other by graff
in thread Tie::DBI works in one script... not the other by liamclimbguy9k

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


Your skill will accomplish what the force of many cannot
	PerlMonks