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Re: Destroying tied serial port

by Marais (Novice)
on Dec 23, 2012 at 22:00 UTC ( #1010132=note: print w/replies, xml ) Need Help??

in reply to Destroying tied serial port

It's embarrassing how often the simple act of documenting your problem leads you to find the cause. In this case, I had a variable ($handle) defined both locally and globally - an old, old story. Fixing that did get me past the problem I described above, not surprisingly. Now of course there is another problem, but I'll consider that one myself a little more before asking for help. --- Marais

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Re^2: Destroying tied serial port
by roboticus (Chancellor) on Dec 24, 2012 at 00:03 UTC


    It's not embarrassing at all. In fact it's an old and quite valuable debugging technique. That's why I frequently create a simple 'test case' program to try to illustrate a bug. The act often helps you understand what's going on, and can point out interactions with other parts of your program.

    It's also the reason that we frequently ask for a simple program that illustrates the problem. The act of doing that can help you answer the question yourself, which is a faster way to learn how to code.

    (It's also the reason I like Test Driven Development (TDD), as it's a similar (in some ways) process.)


    When your only tool is a hammer, all problems look like your thumb.

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