Gremlins

Question

Attached is a code snippet. I used it and complied and it worked. An hour later i went through that bit of the programe again and i got an out of boubds error on the arry.

Can any one explain this for me. Why it work once - then not again?

Richard Brennan · Answer

i think i sussed it out - the file had4 lines each with 3 elelments as need but the last there was a carage return on the last line making an empty 5th line - there for the split put no data into the array and therefor data[2] was out of bounds.

Sam Hobbs · Answer

Use a try/catch for the ReadLine(). Give an error messge if there is an error. Then after the Split first check to ensure there are 3 items or that there is at least three items. My guess is that the file is being used elsewhere in the program or by anohter program. That could affect the snippet in a way that can't be seen by staring at the snippet. It could be seen by checking for errors.

Richard Brennan · Answer

And two hours later (no edits) the problem is back. Right my programe is ruined cos there is no explanagion for this and no way to fix it.

Richard Brennan · Answer

The file defo has 3 elements on each line - and when I went back and re ran it 2 hours later - no problems. Now that is a real gremlin - it should not have happened - then it went away. Humm great.

Vulpes · Answer

Perhaps there are only two items in a particular line in the file but your code is assuming there's three.