你怎么撤消运行
bundle install --without development
现在,我在开发组中有宝石被忽略,因为我运行了一次...(注意我已经尝试删除gemfile.lock无济于事)
因此,如果我试图实现看起来像Facebook的Graph API的东西,需要非常快速并支持数百万用户,那么使用Redis而不是RDBMS有什么不利之处呢？
谢谢!乔纳森
在尝试启动工头后,我得到了这个错误(请注意,它似乎确实在heroku上工作,所以我猜这是一个严格的本地问题):
hrn039:textthechange jon$ foreman start
02:20:00 web.1 | started with pid 7363
02:20:01 web.1 | /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands/server.rb:33:in `parse!': missing argument: -e (OptionParser::MissingArgument)
02:20:01 web.1 | from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/server.rb:280:in `parse_options'
02:20:01 web.1 | from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/server.rb:180:in `options'
02:20:01 web.1 | from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands/server.rb:54:in `set_environment'
02:20:01 web.1 | from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands/server.rb:42:in `initialize'
02:20:01 web.1 | from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands.rb:50:in `new'
02:20:01 web.1 | from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands.rb:50:in `<top (required)>'
02:20:01 web.1 | from script/rails:6:in `require'
02:20:01 web.1 | from script/rails:6:in `<main>'
02:20:01 web.1 | process terminated
02:20:01 system | sending SIGTERM …当单步执行Rails中的Ruby调试器时,我怎么只让它停止在我编写的代码中,跳过所有本机Rails代码？
(即跳过所有看起来像这样的代码)
/Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.1/lib/active_support/core_ext/module/remove_method.rb:4
remove_method(method)
(rdb:1) s
[76, 85] in /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.1/lib/active_support/core_ext/class/attribute.rb
76 def self.#{name}?() !!#{name} end
77
78 def self.#{name}=(val)
79 singleton_class.class_eval do
80 remove_possible_method(:#{name})
=> 81 define_method(:#{name}) { val }
82 end
83
84 if singleton_class?
85 class_eval do
/Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.1/lib/active_support/core_ext/class/attribute.rb:81
define_method(:#{name}) { val }
(rdb:1) s
[79, 88] in /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.1/lib/active_support/core_ext/class/attribute.rb
79 singleton_class.class_eval do
80 remove_possible_method(:#{name})
81 define_method(:#{name}) { val }
82 end
83
=> 84 if singleton_class?
85 class_eval do
86 remove_possible_method(:#{name})
87 def #{name}
88 defined?(@#{name}) ? @#{name} : …是否有一种优雅的写作方式
if o.class == ClassA or o.class == ClassB or o.class == ClassC
我不是特意想要比较课程,这只是一个例子,我没有用布尔做事,所以我做不了类似的事情
if o.class == (ClassA or ClassB or ClassC)
其他例子是
if string == "asdf" or string == "1337"
我发现的唯一的东西似乎是
if [ClassA, ClassB, ClassC].include? o.class
要么
if ["asdf", "1337"].include? string