NaN/PathRefnum? function producing useless answers for Path, Refnum

[camerond]

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@altenbach wrote:

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camerond wrote:

I'm trying simply to see if an INI file exists, so I created the following snippet:

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The right way would be to use this function... Check if File or Folder Exists VI. No need to create your own. 

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But, as in all things, TIMTOWTDI.

Cameron

[paul_cardinale]

The output of "Open Config Data.vi" isn't a true refnum.

You can use the attached VI to check a config refnum (not guaranteed to work in later versions of LV)

[Hooovahh]

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@altenbach wrote:

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camerond wrote:

I'm trying simply to see if an INI file exists, so I created the following snippet:

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The right way would be to use this function... Check if File or Folder Exists VI. No need to create your own. 

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I don't like this function for a couple reasons.  First an empty path returns true and I understand why, but that has never been a need of mine (or anyone I know) so I AND it the OpenG function Valid Path which must be not not-a-path, and not empty.  But my other complaint is it is slower then the OpenG File Exists because of a bunch of checks into LLBs and Packed Libraries (that again are rarly used).  Using these two OpenG funtions works better for me, and is about 5 times faster at determining if a path should be used for some function.