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7610 :: Exception handling without doing rest of the program

[2021-03-11T16:43:52+01:00]

SebastianM (orginal) [2021-03-11T16:43:52+01:00] view original

Hi Guys,

It's another time that I'm stuck learning Nim with Python Crash Course book. Now it's time for exceptions. The point is that program handles IOError that file is missing on disk (on purpose - like in the book) but still gives info about amount of words. Could anyone tell how to prevent him from giving that info if file is missing? Code and output here:

https://play.nim-lang.org/#ix=2SsN

Thank you,

Araq (orginal) [2021-03-11T16:56:20+01:00] view original

Try this variation:

https://play.nim-lang.org/#ix=2SsP

SebastianM (orginal) [2021-03-11T17:16:52+01:00] view original

Thank you very much. The code now works.

PMunch (orginal) [2021-03-12T12:57:48+01:00] view original

Another version, if you want to keep error handling local to what might trigger the error would be to do this: https://play.nim-lang.org/#ix=2Syw. But note that the way it's done there will not output anything for completely empty files. One option is to make the contents an option, or of course to just return early when the error occurs.