File.new raise an exception?

ruby-talk
1

Hello,

I'm pretty new to ruby and I've written some code to parse apache logs, it works but now I want to store the result in a file. The problem is as follow (using irb)

irb(main):001:0> foo = File.open("test")
Errno::ENOENT: No such file or directory - test
         from (irb):1:in `initialize'
         from (irb):1:in `open'
         from (irb):1

I just do not understand the problem ( I can create a file with python in the same directory ), what's wrong for me ?

thanks for a quick answer

Jean-François

2

Jean-François Boisvieux <jfb@mxs.fr> schrieb:

irb(main):001:0> foo = File.open("test")
Errno::ENOENT: No such file or directory - test
        from (irb):1:in `initialize'
        from (irb):1:in `open'
        from (irb):1

I just do not understand the problem ( I can create a file with
python in the same directory ), what's wrong for me ?

Ruby is opening the file for reading per default. As there seems to be
no file with the name test, you get the error. To open it for writing,
you have to say

File.open("test", "w")

Patrick

···

--
"Ah. Philosophy," said Om.
(Small Gods)

3

Thanks Patrick for this precise and clear answer

Jean-Francois

···

Le 26 mars 06 à 18:38, Patrick Hof a écrit :

Jean-François Boisvieux <jfb@mxs.fr> schrieb:

irb(main):001:0> foo = File.open("test")
Errno::ENOENT: No such file or directory - test
        from (irb):1:in `initialize'
        from (irb):1:in `open'
        from (irb):1

I just do not understand the problem ( I can create a file with
python in the same directory ), what's wrong for me ?

Ruby is opening the file for reading per default. As there seems to be
no file with the name test, you get the error. To open it for writing,
you have to say

File.open("test", "w")

Patrick

--
"Ah. Philosophy," said Om.
(Small Gods)