[#397988] Help with sqlite3 please — Kaye Ng <lists@...>

I'm on Windows 7 Ultimate, 64-bit

18 messages 2012/08/03
[#397989] Re: Help with sqlite3 please — Chris Hulan <chris.hulan@...> 2012/08/03

sqlite is not ruby, so you should look for a sqlite group ;)

[#397990] Re: Help with sqlite3 please — Kaye Ng <lists@...> 2012/08/03

> However it looks like you have 'SQL' at the beginning of your CREATE

[#398031] Gem install or usage problem in shared environment — Tom Moulton <lists@...>

I am moving to a Westhost shared CPanel account and I am trying to set

17 messages 2012/08/04
[#398077] Re: Gem install or usage problem in shared environment — Tom Moulton <lists@...> 2012/08/06

I got a solution from WestHost and it may help others:

[#398086] Re: Gem install or usage problem in shared environment — Ryan Davis <ryand-ruby@...> 2012/08/07

[#398088] Re: Gem install or usage problem in shared environment — Tom Moulton <lists@...> 2012/08/07

Ryan Davis wrote in post #1071503:

[#398063] Join with ActiveRecord using non-standard schema — Tedi Roca <lists@...>

Hi,

13 messages 2012/08/06

[#398135] Help with database-related code pls — Kaye Ng <lists@...>

Hi guys! This is just a part of the code of a program that can load a

12 messages 2012/08/08

[#398190] How do you order your class methods? — masta Blasta <lists@...>

Just getting some layout ideas from other fellow devs.

11 messages 2012/08/10

[#398245] namespace instance methods? — John Doe <lists@...>

I have a large class with many instance methods that I want to

14 messages 2012/08/13

[#398287] Idea: def ... end returns the symbolized version of the newly-defined method, instead of nil — Peter <lumbergh@...>

This would allow useful syntax constructs such as this:

9 messages 2012/08/13

[#398362] case vs if-else — ajay paswan <lists@...>

Which one is faster?

20 messages 2012/08/16

[#398385] A Ruby class is never closed — Rubyist Rohit <lists@...>

Is it true that a Ruby class definition is never closed? Even after

18 messages 2012/08/16

[#398504] How to create an EXecutable file (Linux) — Fosiul Alam <lists@...>

Hi

13 messages 2012/08/22

[#398506] Save a file by clicking on a link — ajay paswan <lists@...>

I clicked a link to download a file using ruby, now I see the open-save

41 messages 2012/08/22

[#398641] force child threads run paralelly? — ajay paswan <lists@...>

I have created two child thread using main thread- child1 and child2.

19 messages 2012/08/28
[#398644] Re: force child threads run paralelly? — ajay paswan <lists@...> 2012/08/28

Ruby version:

[#398648] Re: force child threads run paralelly? — Tony Arcieri <tony.arcieri@...> 2012/08/28

On Tue, Aug 28, 2012 at 7:19 AM, ajay paswan <lists@ruby-forum.com> wrote:

[#398684] Can I do this with Ruby and sqlite alone? — Kaye Ng <lists@...>

Hi guys.

16 messages 2012/08/29

Re: variable from array to function to array

From: sto.mar@...
Date: 2012-08-17 14:03:04 UTC
List: ruby-talk #398424
Am 17.08.2012 14:15, schrieb Dave Castellano:
> The bigger picture...  I am saving multiple question templates in a
> array and need to store all the info (the question, the min and max
> ranges, the units of measure etc assoc with each question.  The
> associated info is used to build the question ... eg in question one,
> need to pass 20,40 to number_range(min,max)  and use the returned value
> as u.

Ok... :)

First: did you consider using a templating system for your
"question templates"? You could avoid the lambdas;
instead, you provide a template as a simple string that gets
evaluated later when the needed values are known.

Second: Instead of using nested arrays I would put all the
question-generating functionality into a class.

Assuming the structure of your questions is always the same,
below is one possible way to do it:


require 'erb'

class Question

   attr_reader :unit

   def initialize(text, range, unit)
     @text = ERB.new(text)
     @range = range
     @unit = unit
   end

   def val
     rand(@range)
   end

   def to_s
     @text.result(binding)
   end
end

questions = [
   Question.new('A slide is placed <%= val %> <%= unit %>...',
                20..40, 'cm'),
   Question.new('An image is in focus <%= val %> <%= unit %>...',
                10..15, 'mm')
]

questions.each {|q| puts q }
questions.each {|q| puts q }  # results in different values


*BUT:*

- Can't you simply include the unit in the text part?
- Do you really need to have the same question with
   different values in the same run of your program?

How about:

questions = [
   "A slide is placed #{rand(20..40)} cm...",
   "An image is in focus #{rand(10..15)} mm..."
]
questions.each {|q| puts q }


> def number_range(min,max)
>    min + rand(max - min + 1)  **Thanks!
> end
>
> array =[
> [ lambda {|u,u_unit| "A slide is placed #{u} #{u_unit} to the left of a
> lens...", 20, 40, "cm"],
> [ lambda {|v,v_unit| "An image is in focus #{v} #{v_unit} to the right
> of a...", 10, 25, "mm],
> [....
> ]
>
> puts array[n][variable returned from number_range method]


-- 
<https://github.com/stomar/>

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