thr3ads.net - Rails - case statement ranges [Jun 2007]

If this information is useful, please help other people find it:
Share via:

gabordemeter

2007-Jun-20 20:30 UTC

case statement ranges

I have the following in my controller:

  def color_coding(value = nil)
    case value
      when 101..1000000000
        "busy_11"

      when 91..100
        "busy_10"

      when 81..90
        "busy_9"

      when 71..80
        "busy_8"

      when 61..70
        "busy_7"

      when 51..60
        "busy_6"

      when 41..50
        "busy_5"

      when 31..40
        "busy_4"

      when 21..30
        "busy_3"

      when 11..20
        "busy_2"

      when 1..10
        "busy_1"

      else
        "no_class"
    end
  end


Two questions:

1)       when 101..1000000000
           "busy_11"


is obviously an ugly hack. What I want is: output "busy_11" if value
is 101 or higher. Not sure how I should write this in ruby.


2)       when 91..100
        "busy_10"

What I want is: output "busy_10" when value is >= 91 and <= 100.
Not
sure if it should be 91..100 or 91...100 or some other syntax.

Tried to google this but couldn''t find a tutorial that covers the
above fully. Thanks in advance!


Best,

Gabor


--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Tyler MacDonald

2007-Jun-20 20:34 UTC

head link

Re: case statement ranges

def color_coding(value = nil)
  if value && value > 0
    if value > 100
      "busy_11"
    else
      "busy_" + ((value/10)+1).to_s
    end
  end
end

  Cheers,
    Tyler



gabordemeter <gabordemeter-YbzV19J7KiEAvxtiuMwx3w@public.gmane.org>
wrote:> 
> I have the following in my controller:
> 
>   def color_coding(value = nil)
>     case value
>       when 101..1000000000
>         "busy_11"
> 
>       when 91..100
>         "busy_10"
> 
>       when 81..90
>         "busy_9"
> 
>       when 71..80
>         "busy_8"
> 
>       when 61..70
>         "busy_7"
> 
>       when 51..60
>         "busy_6"
> 
>       when 41..50
>         "busy_5"
> 
>       when 31..40
>         "busy_4"
> 
>       when 21..30
>         "busy_3"
> 
>       when 11..20
>         "busy_2"
> 
>       when 1..10
>         "busy_1"
> 
>       else
>         "no_class"
>     end
>   end
> 
> 
> Two questions:
> 
> 1)       when 101..1000000000
>            "busy_11"
> 
> 
> is obviously an ugly hack. What I want is: output "busy_11" if
value
> is 101 or higher. Not sure how I should write this in ruby.
> 
> 
> 2)       when 91..100
>         "busy_10"
> 
> What I want is: output "busy_10" when value is >= 91 and <=
100. Not
> sure if it should be 91..100 or 91...100 or some other syntax.
> 
> Tried to google this but couldn''t find a tutorial that covers the
> above fully. Thanks in advance!
> 
> 
> Best,
> 
> Gabor
> 
> 
> > 
-- 

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

gabordemeter

2007-Jun-20 20:41 UTC

head link

Re: case statement ranges

Thanks guys! Great stuff!


But one question still remains:

what does 91..100 (two dots between the two numbers) mean, and what
does 91...100 (three dots between the two numbers) mean in Ruby?


Best,

Gabor




On Jun 20, 1:30 pm, gabordemeter
<gabordeme...-YbzV19J7KiEAvxtiuMwx3w@public.gmane.org>
wrote:> I have the following in my controller:
>
>   def color_coding(value = nil)
>     case value
>       when 101..1000000000
>         "busy_11"
>
>       when 91..100
>         "busy_10"
>
>       when 81..90
>         "busy_9"
>
>       when 71..80
>         "busy_8"
>
>       when 61..70
>         "busy_7"
>
>       when 51..60
>         "busy_6"
>
>       when 41..50
>         "busy_5"
>
>       when 31..40
>         "busy_4"
>
>       when 21..30
>         "busy_3"
>
>       when 11..20
>         "busy_2"
>
>       when 1..10
>         "busy_1"
>
>       else
>         "no_class"
>     end
>   end
>
> Two questions:
>
> 1)       when 101..1000000000
>            "busy_11"
>
> is obviously an ugly hack. What I want is: output "busy_11" if
value
> is 101 or higher. Not sure how I should write this in ruby.
>
> 2)       when 91..100
>         "busy_10"
>
> What I want is: output "busy_10" when value is >= 91 and <=
100. Not
> sure if it should be 91..100 or 91...100 or some other syntax.
>
> Tried to google this but couldn''t find a tutorial that covers the
> above fully. Thanks in advance!
>
> Best,
>
> Gabor

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Rob Biedenharn

2007-Jun-20 20:43 UTC

head link

Re: case statement ranges

On Jun 20, 2007, at 4:34 PM, Tyler MacDonald wrote:> def color_coding(value = nil)
>   if value && value > 0
>     if value > 100
>       "busy_11"
>     else
>       "busy_" + ((value/10)+1).to_s
>     end
>   end
> end
>
>   Cheers,
>     Tyler
>
> gabordemeter <gabordemeter-YbzV19J7KiEAvxtiuMwx3w@public.gmane.org>
wrote:
>> I have the following in my controller:
>>
>>   def color_coding(value = nil)
>>     case value
>>       when 101..1000000000
>>         "busy_11"
>>
>>       when 91..100
>>         "busy_10"
>>
>>       when 81..90
>>         "busy_9"
>>
>>       when 71..80
>>         "busy_8"
>>
>>       when 61..70
>>         "busy_7"
>>
>>       when 51..60
>>         "busy_6"
>>
>>       when 41..50
>>         "busy_5"
>>
>>       when 31..40
>>         "busy_4"
>>
>>       when 21..30
>>         "busy_3"
>>
>>       when 11..20
>>         "busy_2"
>>
>>       when 1..10
>>         "busy_1"
>>
>>       else
>>         "no_class"
>>     end
>>   end
>>
>>
>> Two questions:
>>
>> 1)       when 101..1000000000
>>            "busy_11"
>>
>>
>> is obviously an ugly hack. What I want is: output "busy_11"
if value
>> is 101 or higher. Not sure how I should write this in ruby.
when nil, 0
   "no_class"
else
   "busy_11"

I''m guessing what you might want for value==0

>> 2)       when 91..100
>>         "busy_10"
>>
>> What I want is: output "busy_10" when value is >= 91 and
<= 100. Not
>> sure if it should be 91..100 or 91...100 or some other syntax.
>>
>> Tried to google this but couldn''t find a tutorial that covers
the
>> above fully. Thanks in advance!
>>
>> Best,
>>
>> Gabor
91..100 === x will test (91 <= x && x <= 100)

91...100 === x (three dot range excludes end) will test (91 <= x && x
< 100)

What should color_coding(100.5) give?

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob-xa9cJyRlE0mWcWVYNo9pwxS2lgjeYSpx@public.gmane.org



--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

dblack-TKXtfPMJ4Ozk1uMJSBkQmQ@public.gmane.org

2007-Jun-20 20:48 UTC

head link

Re: case statement ranges

Hi --

On Wed, 20 Jun 2007, gabordemeter wrote:
>
> Thanks guys! Great stuff!
>
>
> But one question still remains:
>
> what does 91..100 (two dots between the two numbers) mean, and what
> does 91...100 (three dots between the two numbers) mean in Ruby?
The .. is inclusive; the ... is exclusive.


David

-- 
* Books:
   RAILS ROUTING (new! http://www.awprofessional.com/title/0321509242)
   RUBY FOR RAILS (http://www.manning.com/black)
* Ruby/Rails training
     & consulting:  Ruby Power and Light, LLC (http://www.rubypal.com)

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Philip Hallstrom

2007-Jun-20 20:49 UTC

head link

Re: case statement ranges

How about this (untested) instead...

def color_coding(value = nil)
   if value >= 101
     "busy_11"
   elsif value <= 0 || value.nil?
     "no_class"
   else
     "busy_" + (value/10.0).ceil.to_s
   end
end

Would be a lot shorter...

On Wed, 20 Jun 2007, gabordemeter wrote:
>
> I have the following in my controller:
>
>  def color_coding(value = nil)
>    case value
>      when 101..1000000000
>        "busy_11"
>
>      when 91..100
>        "busy_10"
>
>      when 81..90
>        "busy_9"
>
>      when 71..80
>        "busy_8"
>
>      when 61..70
>        "busy_7"
>
>      when 51..60
>        "busy_6"
>
>      when 41..50
>        "busy_5"
>
>      when 31..40
>        "busy_4"
>
>      when 21..30
>        "busy_3"
>
>      when 11..20
>        "busy_2"
>
>      when 1..10
>        "busy_1"
>
>      else
>        "no_class"
>    end
>  end
>
>
> Two questions:
>
> 1)       when 101..1000000000
>           "busy_11"
>
>
> is obviously an ugly hack. What I want is: output "busy_11" if
value
> is 101 or higher. Not sure how I should write this in ruby.
>
>
> 2)       when 91..100
>        "busy_10"
>
> What I want is: output "busy_10" when value is >= 91 and <=
100. Not
> sure if it should be 91..100 or 91...100 or some other syntax.
>
> Tried to google this but couldn''t find a tutorial that covers the
> above fully. Thanks in advance!
>
>
> Best,
>
> Gabor
>
>
> >
>
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Philip Hallstrom

2007-Jun-20 21:20 UTC

head link

Re: case statement ranges

>> But one question still remains:
>>
>> what does 91..100 (two dots between the two numbers) mean, and what
>> does 91...100 (three dots between the two numbers) mean in Ruby?
>
> The .. is inclusive; the ... is exclusive.
Best analogy I''ve heard is that that extra dot pushes the last number
off
the cliff where cliff is your range.

That''s the only way I can remember it :)

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Rails - Jun 2007 - case statement ranges

case statement ranges

Re: case statement ranges

Re: case statement ranges

Re: case statement ranges

Re: case statement ranges

Re: case statement ranges

Re: case statement ranges