This an odd one.
require ‘rubygems’
works in my scripts . . . but if I go to IRB to test some ‘rspec’ stuff.
I get:
require ‘rubygems’
=> false
Tried including the whole path, but that did not work either any ideas
why scripts being run don’t have a problem requiring rubygems but IRB
does?
OSX 10.5.3
Ruby 1.8.6
Model Name: MacBook Pro 15"
Model Identifier: MacBookPro1,1
Processor Name: Intel Core Duo
Processor Speed: 2.16 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 2 MB
Memory: 2 GB
On Tuesday 24 June 2008, Brad Hutchins wrote:
Processor Name: Intel Core Duo
Processor Speed: 2.16 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 2 MB
Memory: 2 GB
The value returned by require doesn’t tell whether there was an error or
not
(if the file can’t be found, a LoadError exception will be raised).
Rather,
since require tries to avoid loading a file more than one time, it says
whether you required the file for the first time (true) or if it had
already
been loaded (in this case returns false and doesn’t try to load the file
again). So, the fact that in irb
require ‘rubygems’
returns false only means that the file rubygems.rb had already been
loaded,
and it wasn’t necessary to load it a second time.
Stefano
El Martes, 24 de Junio de 2008, Brad Hutchins escribió:
require ‘rubygems’
=> false
When you get “false” it means that library was already loaded.
Example:
~$ irb
irb(main):001:0> require ‘time’
=> true
irb(main):002:0> require ‘time’
=> false
If the library doesn’t exist in the configured path you would get an
error:
irb(main):001:0> require ‘non_existing_library’
LoadError: no such file to load – non_existing_library
from (irb):1:in `require’
from (irb):1
from :0
Stefano C. wrote:
On Tuesday 24 June 2008, Brad Hutchins wrote:
Processor Name: Intel Core Duo
Processor Speed: 2.16 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 2 MB
Memory: 2 GB
The value returned by require doesn’t tell whether there was an error or
not
(if the file can’t be found, a LoadError exception will be raised).
Rather,
since require tries to avoid loading a file more than one time, it says
whether you required the file for the first time (true) or if it had
already
been loaded (in this case returns false and doesn’t try to load the file
again). So, the fact that in irb
require ‘rubygems’
returns false only means that the file rubygems.rb had already been
loaded,
and it wasn’t necessary to load it a second time.
Stefano
Hmmm . . . then I have a different problem.
on to requiring rspec
Bulk updating Gem source index for: http://gems.rubyforge.org
Updating metadata for 13 gems from http://gems.rubyonrails.org
…
complete
Successfully installed rspec-1.1.4
1 gem installed
Installing ri documentation for rspec-1.1.4…
Installing RDoc documentation for rspec-1.1.4…
macbook-pro-15:~ $ irb
require ‘rspec’
LoadError: no such file to load – rspec
from
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in
gem_original_require' from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in require’
from (irb):1
And this is the second time I have unistalled and re-installed rspec.
Tested other GEMs . . .
require ‘snmp’
true
On Tuesday 24 June 2008, Brad Hutchins wrote:
not
returns false only means that the file rubygems.rb had already been
Updating metadata for 13 gems from http://gems.rubyonrails.org
LoadError: no such file to load – rspec
from
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rub
ygems/custom_require.rb:27:in gem_original_require' from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rub ygems/custom_require.rb:27:in require’
from (irb):1
That’s because rspec doesn’t provide a rspec.rb file but a spec.rb file.
So
require ‘spec’
should work.
Stefano