does someone knows if there is method which checks both? if not then
i’ll write my own … but i am curious if there is one for
return x.nil? or blank?
On Dec 6, 2007, at 1:03 PM, Michal G. wrote:
does someone knows if there is method which checks both? if not then
i’ll write my own … but i am curious if there is one forreturn x.nil? or blank?
(x.nil? or x.blank?) is logically equivalent to x.blank? because nil
is blank:
nil.blank? # -> true
So the answer is yes, you are looking for blank? indeed :-).
– fxn
oh thanks … thats good to know 
great!
After a quick test it appears that Rails must add the blank? method to
nil. Ruby “out-of-the-box” reports that nil has no blank? method. Just
FYI.
On Dec 6, 7:13 am, Michal G. <rails-mailing-l…@andreas-
I want one that checks for empty + empty array…
According to:
http://noobkit.com/show/ruby/rails/rails-stable/activesupport/object/blank-3f.html
ActiveSupport is what includes the method.
All the code it uses is pretty simple:
def blank?
if respond_to?(:empty?) && respond_to?(:strip)
empty? or strip.empty?
elsif respond_to?(:empty?)
empty?
else
!self
end
end
On Dec 7, 2007 4:58 PM, Robert W. [email protected] wrote:
Posted viahttp://www.ruby-forum.com/.
–
Ryan B.
http://www.frozenplague.net
On Dec 7, 2007, at 8:20 AM, eggie5 wrote:
I want one that checks for empty + empty array…
That’s blank? again.
In Rails blank? has an implementation in Object and a few special
cases. For example in Array
class Array #:nodoc:
alias_method :blank?, :empty?
end
In NilClass it returns true directly:
class NilClass #:nodoc:
def blank?
true
end
end
And there are a few more. See activesupport/lib/active_support/
core_ext/blank.rb.
– fxn
Michal G. wrote:
does someone knows if there is method which checks both? if not then
i’ll write my own … but i am curious if there is one forreturn x.nil? or blank?
x.blank? is equivalent to x.nil? or x.empty?
oh duh…