I am trying to use Ruby to execute the following bash commands on some images:
class Pingcrush
def initialize
Dir.foreach(‘drawable’) do |item|
next if item ==’.’ or item ==’..’
# do work
Category: Ruby
Ruby, a scripting language created for simple and fast object-oriented programming (object-oriented programming), was developed by Japanese Yukihiro Matsumoto in the 1990s and complies with the GPL agreement and Ruby License. Its inspiration and features come from Perl, Smalltalk, Eiffel, Ada, and Lisp languages. The Ruby language itself has also developed Ruby language alternatives to other platforms such as JRuby (Java platform) and IronRuby (.NET platform). The author of Ruby started writing Ruby on February 24, 1993, and it was not officially released to the fj (news group) until December 1995. Because Perl is pronounced the same as the June birthstone pearl, Ruby is named after the July birthstone ruby.
ruby-on-rails – Capybara Selenium
When I use Selenium to run my test, my step fails and the page is displayed as follows in the browser:
Internal Server Error
can’t convert nil into String
WEBrick/1.3.1 (Ruby/1.9.2/2010-08-18
Ruby-on-rails – How to find the maximum position in the array?
If I have
ary = [7, 8, 0, 1, nil, 6] How to find the position of the maximum value in the array? I can do this, but it needs more than one line.
ary = [7, 8, 0, 1, nil, 6, 8]
ary.index(
Ruby-on-rails – RVM and lost (but installed) gems?
I am trying to install RVM on OSX 10.6.7 and start using it to sandbox my development environment on a per-project basis, but I have encountered some problems.
I installed RVM and created a g
Ruby-on-rails – Time zone in RAILS
If I have a time string in the form of “Wed,22 Jun 2011 09:43:58 0200” from a customer, I want to save the time zone. This is important because it is not only important It is the absolute UTC time,
Ruby – Display error mode
In my code, I usually use the following settings:
module MyLib
VERSION = “0.1 .1”
ERROR = [
“You can either give one arg and a block or two args, not both.”,
“Yadda yadda…”
]< br />end
How to create an ActiveRecord dynamic creation class during runtime? (ruby)
I am trying metaprogramming and want to dynamically create a class that inherits from ActiveRecord.
For example, I can do this:
Object.const_set(“Orders”, Class.new {def blah() 42 end }
ruby-on-rails – Ruby NoMethodError
Okay, I’m a little novice. I know this error is happening because I don’t understand how to call the method correctly. So can you help me understand what’s going wrong here?
NoMethodError in
Ruby-on-rails – Rails 3 Roulette and Name Space
I want a namespace controller named “portal”.
This will be nested resources, such as companies and products.< /p> I want a route like the following:
/portal/: company_id / product/: id
Runy-on-rails – the command output in the Rails console: No description of the output?
I am using rails console and some models. I am running something:
Model.find(:all ).each do |x| p x.name end This is fine, it allows me to see all the values of a specific column, but after