小编ash*_*ai_的帖子

我有以下数组

cities = ["Kathmandu", "Pokhara", "", "Dharan", "Butwal"]

我想从数组中删除空白元素,并希望得到以下结果:

cities = ["Kathmandu", "Pokhara", "Dharan", "Butwal"]

有没有像compact这样的方法没有循环？

我使用gem 1.3.7,rails 2.3.5和ruby 1.8.7(2008-08-11 patchlevel 72).启动服务器时,我得到低于警告.

Loading development environment (Rails 2.3.5)
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:44: warning: already initialized constant PercentGeometry
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:45: warning: already initialized constant AspectGeometry
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:46: warning: already initialized constant LessGeometry
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:47: warning: already initialized constant GreaterGeometry
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:48: warning: already initialized constant AreaGeometry
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:49: warning: already initialized constant MinimumGeometry
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:52: warning: already initialized constant FLAGS
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:58: warning: already initialized constant RFLAGS
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:92: warning: already initialized constant W
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:93: warning: already initialized constant H
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:94: warning: already initialized constant X
/Users/me/.rvm/gems/ruby-1.8.7-p72@mbm/gems/rmagick-2.13.1/lib/RMagick.rb:95: warning: already …

我有一个阵列tempArray = ["Kathmandu","Pokhara","Dharan"].为了确保"博卡拉"在tempArry中,我必须使用循环并检查tempArray的每个元素.

有没有办法实现Ruby,Array.include?所以我不需要使用循环？

我无法ar_sendmail从终端运行命令.我不认为我错过了它的配置.以下是我的代码;

development.rb
++++++++++++++++++++++++++++++++++++++++++++++++++++
ActionMailer::Base.delivery_method = :activerecord
ActionMailer::Base.smtp_settings = {
  :address => "smtp.gmail.com",
  :port => 25,
  :domain => "www.google.com",
  :authentication => :plain,
  :user_name => "ashis.lun@gmail.com",
  :password => "kathmandu",
  :enable_starttls_auto => true
}
require "action_mailer/ar_mailer"

Gemfile 
+++++++++++++++++++++++++++
gem "ar_mailer", "1.5.1"

My Mailer
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
class Postoffice < ActionMailer::ARMailer
  def recover_password_email(account, name, address)
    @recipients = address
    @from = "ashis.lun@gmail.com"
    @subject = "Your Account at #{account.org_name} is Ready"
    @body["subdomain"] = account.subdomain
    @body["name"] = name
    @body["org_name"] = account.org_name
    @body["password"] = password
    @body["email"] = address …

我做了多次提交,但不希望现在推送所有提交.有没有办法只推动我想要的那些提交？

谢谢

我以前无法运行./script/console,因为我的script console文件已经包含,它曾经抛出错误#!/usr/bin/env ruby19.做命中和试用后,我通过更换固定这个错误#!/usr/bin/env ruby19有#!/usr/bin/env ruby.

以上几行有什么作用？

版本:

• Ruby:1.9.2-p180
• Ruby on Rails:2.3.5

我得到以下链接来解决与类和实例方法相关的问题. http://www.fakingfantastic.com/2010/09/20/concerning-yourself-with-active-support-concern/

module NotificationsHelper
  extend ActiveSupport::Concern

  module ClassMethods
    def my_class_method
      # ...
    end
  end

  module InstanceMethods
    def my_instance_method
      # ...
    end
  end
end

但我得到了未初始化的常量ActiveSupport :: Concern错误.我正在使用Rails 2.3.5和Ruby 1.9.2p180

我正在使用rails 2.3.5,我希望我们Rspec进行测试.我已经安装了rspec gem但是无法在生成器列表中列出rspec.我指的是https://github.com/rspec/rspec-rails.

group :development, :test do
  gem "rspec", "~> 1.3"
  gem "rspec-rails", "~> 1.3"
end

谢谢.