different results with File.exists?

[Mehdi Karamnejad]

when I use a string constant with File.exists? like the following ,it
works fine:
File.exists?("/home/sepehr")
but when I get the string from user:
path=gets
if File.exists?(path) then

 

[Robert Klemme]

yeah,that was it! thanks

Additional hint: use p to debug output what you have. e.g.

path=gets
p path
if File.exists?(path) then

Cheers

robert

 

[Marc Heiler]

Additional hint: use p to debug output

Or use pp!

With arrays and hashes pp beats p easily! :>

 

[David A. Black]

Hi --

Additional hint: use p to debug output what you have. e.g.

path=gets
p path
if File.exists?(path) then

Meta-additional hint: in 1.9, p returns its argument(s), so if you
have:

path = gets

you can just change it to:

p path = gets

which makes for slightly easier back-and-forth between the p version
and the non-p version.


David

--
David A. Black / Ruby Power and Light, LLC / http://www.rubypal.com
Ruby/Rails training, mentoring, consulting, code-review
Latest book: The Well-Grounded Rubyist (http://www.manning.com/black2)

September Ruby training in NJ has been POSTPONED. Details to follow.

 

[Robert Klemme]

Hi --



Meta-additional hint: in 1.9, p returns its argument(s), so if you
have:

=A0path =3D gets

you can just change it to:

=A0p path =3D gets

which makes for slightly easier back-and-forth between the p version
and the non-p version.

David, did you rather mean "path =3D p gets"? Because "p path =3D gets"
does work in pre 1.9 already.

Kind regards

robert


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