similar to: creating variables on the fly with a loop

I was able to create a has_and_belongs_to_many relationship for my app, but now I''m not too sure how to write queries for it. Basically, I have a table ''courses'' that has_and_belongs_to_many ''categories'' and vice versa So I''m trying to figure out how I would find only the courses that belong to a category that I specify. Let''s

Hello, I have this cucumber step definition: Given /^the site has pages "(.+)" and "(.+)"$/ do | page_1, page_2 | Page.create :title => page_1 if Page.find_by_title(page_1).nil? Page.create :title => page_2 if Page.find_by_title(page_2).nil? end This works, but obviously I would like to DRY it up. I was thinking along the lines. Given /^the site has pages

Hi, I''m using Rails 2.2.2. I noticed that creating two references to the same database ActiveRecord object, then deleting with one of them, followed by saving with the other, true is returned, but no new record is actually saved. e.g.: doc=Document.new(:title => "sam''s speciality") doc.save doc.id # ==> 23 doc2=Document.find_by_title("sam''s

Hi Don, Hi to all readers, many thanks for all your answers and all your help. I adapted Don's code to my data and Don's code does the trick: str(Kunden01) for (year in 2011:2015) { Reeller_Kunde <- paste0("Reeller_Kunde_", year) Umsatz <- paste0("Umsatz_", year) cat('Creating', Reeller_Kunde,'from', Umsatz,'\n') Kunden01[[

I''ve added a method to the mock class that makes it pretty easy to stub associations in rails. I''ve been using it for awhile and it seems to cut down on a lot of setup code for the controller and model specs that use associations. #before @person = mock_model(Person) posts = mock(''post_proxy'') posts.stub!(:build).and_return(mock_model(Post, :save => true))

Hi all, I would like to use a loop for tasks that occurs repeatedly: # Groups # Umsatz <= 0: 1 (NICHT kaufend) # Umsatz > 0: 2 (kaufend) for (year in c("2011", "2012", "2013", "2014", "2015")) { paste0("Kunden$Kunde_real_", year) <- (paste0("Kunden$Umsatz_", year) <= 0) * 1 +

When a user creates a post I also want to save all the tags associated with it. I do that in the post_controller like this presently: def save @post = Post.new(@params[:post]) @tags = Tag.new(@params[:tags]) @post.user_id = session[:id] if @post.save @tags.title.split('','').each do |tag| present_tag = Tag.find_by_title(tag.strip) present_tag =

On 01/28/2013 06:51 PM, Hal Finkel wrote: > Is this sufficient to implement #pragma ivdep in clang? I'm not completely sure of this: "Note: The proven dependencies that prevent vectorization are not ignored, only assumed dependencies are ignored."

This isn't a syslinux issue, but I don't see a mailing list setup for the zisofs tools. Forgive me if this is sent to the wrong place. The sloppy option does not work as documented in the mkzftree man page. Here is the patch I used to enable it. --- zisofs-tools-1.0.7/mkzftree.c.sloppy 2007-05-15 08:42:20.000000000 -0400 +++ zisofs-tools-1.0.7/mkzftree.c 2007-05-15

About these disclaimers associated with ivdep and such... You guys are overthinking it. They're just saying you cannot force the compiler to vectorize or parallelize a loop that it knows (can prove!) is not a parallel loop. They are not obliging the compiler to do dependence analysis or alias analysis or anything. For example len = 0; while (A[i]) { i++; len++; } Assert all you want;

undefined method `each'' for 0:Fixnum at line @school = School.find_by_title(params[:school_id].gsub(''-'', " ")) for team in @school.teams ........ end @school does exist cause i tried with .find(:first) and it gave the same error. Also I''m getting undefined method `reject'' for #<Game:0x24ca1c4> From @home.game_ids = @game

Ashlee Vance's article on R in the New York Times. This is typical of the New York Times. Because they get to coast on the prestige and reputation of their brand , they have a history of just this sort of journalistic sloppiness. Whether it's the author or the editor at fault doesn't really matter, they do this screw-up all the time. Look, if you write an article on the first page of

Hi When preparing documentation using Rd2dvi sometimes we get "overflow" on some lines. The consequence is that in the documentation there are some lines where words are not hyphenated or moved. The final document has some lines with more columns than the rest of the text. This happens when we use \code{} (which probably calls the \tt in latex). I've been checking the documentation

Christian -- This is not a bug, but a feature, and the dot is not the issue here. R uses partial argument matching on function arguments. So: > f <- function(foobar = 0){print(foobar)} > f function(foobar = 0){print(foobar)} > > f(fo=1) [1] 1 > f(foo=1) [1] 1 > f(foob=1) [1] 1 > f(fooba=1) [1] 1 > f(foon=1) Error in f(foon = 1) : unused argument(s) (foon ...)

I was doing some research about creating thumbnail images on the fly after an image has been uploaded in a form, but for some reason it''s not working for me. I''ve downloaded ImageMagick 6.2.5 for Mac but when I run a test (identify image.gif) it gives me this error: dyld: Library not loaded: /sw/lib/libjpeg.62.dylib Referenced from: /Developer/ImageMagick-6.2.5/bin/identify

Here is what I''d like to be able to do: I want to be able administer routes using a rails application. So an interface would list routes and give users the ability to manage these on the fly: class RoutesController < ApplicationController # very simple example def add ... Routes.connect ''customurl'', :controller => "customcontroller",

Hello everyone, As a beginner to ROR, I am very confused regarding why the following is happening. If my function is defined as def self.home_categories (portal_id) find(:all, :conditions => [ "portal_id=?", portal_id ] ) end the following doesn''t works (the database is queried with a value of 0. portal_id=1 @categories =

I am aware that it is easily possible to create var names on the fly. e.g. assign(paste("m",i,sep=""),j) but is it possible to assign dataframes to variables created on the fly? e.g. If I have a dataframe called master and I wanted to subset parts of those data into separate dataframes, I could do: m1=subset(master,master$SAMPLE=='1')

I'm trying to set up a reproducible test environment for a MUA I'm working on, with accounts and dummy data that can be trashed and restored while testing. I'd like to exercise the IMAP client part of the MUA, and am looking into using a local dovecot instance to do that. I'm trying to make this as minimal-config as possible: ideally the test environment could create a dummy

If I have a resource called ''assets'' then I get for free a bunch of helpers, like assets_path new_asset_path and so forth, right? I would like to be able to create a call to one of these on the fly when I only find out the name of the resource at run time. For example I would like to do this: resource_name = "assets" resource_path(resource_name, method => :new)