Hello. This is my first post and I’m new to coding and ruby. I’m
trying to learn the basics right now from Lynda.com. I’m trying to run
the above file “methods.rb” from the command line. In the command prompt
I navigate to the correct folder, switch to irb, and then I use
require"methods.rb".
In the lynda tutorial video, this returns >true. It works.
When I do it, I get
LoadError: cannot load such file – methods.rb
from
C:/Ruby200/lob/ruby/2.0/rubygems/core_ext/kernel_require.rb:45:in
‘require’
from
C:/Ruby200/lob/ruby/2.0/rubygems/core_ext/kernel_require.rb:45:in
‘require’
from (irb):2
from C:/Ruby200/bin/irb:12:in ‘’
This tutorial I’m watching is about four years old, so he’s using an
older version of ruby. I know this is probably the simplest thing, but
as a newbie I have zero decoding skill. Any help would be appreciated.
Lastly, if you know of a better way to start learning ruby than the
lynda tutorail series, I’m very open to input of any kind.
Thanks in advance,
-S.
On Wed, Apr 17, 2013 at 8:46 PM, Gouverneur Cadwalader
<[email protected]
wrote:
LoadError: cannot load such file – methods.rb
older version of ruby. I know this is probably the simplest thing, but
as a newbie I have zero decoding skill. Any help would be appreciated.
I think that’s it. Ruby from 1.9.2 on does not allow you to require
files
in the current working directory, unless you add that directory to
$LOAD_PATH; earlier versions automatically put it there for you. The
easiest way around that is to use require_relative.
I don’t know what the Lynda tutorial does with code that you’ve
required,
but if you just want to run a Ruby file from Windows’s cmd, you can just
run ruby methods.rb. That’s a little more direct, but it puts you back
in
cmd when it finishes.
When you require a file, it looks through an array of directories
(called
the $LOAD_PATH) until it finds that file. In older rubies, the current
directory (represented with a period) was in the load path, in newer
rubies, it was removed.
The simple solution to your problem, in IRB, is to run irb like this
irb -I . (that’s a capitol “i”) which will add the current working
directory
back into the load path, like it is on the Lynda.com version.
When you get to writing programs that depend on this, you can use
require_relative instead of require. When you get to writing real
programs,
you’ll need to learn and understand the load path. When you get that
far,
read the section about the load path from here
-Josh
On Wed, Apr 17, 2013 at 8:46 PM, Gouverneur Cadwalader
<[email protected]