Specification From ・・・ To (exclusive)
">= 3.0" 3.0 ・・・ ∞
"~> 3.0" 3.0 ・・・ 4.0
"~> 3.0.0" 3.0.0 ・・・ 3.1
"~> 3.5" 3.5 ・・・ 4.0
"~> 3.5.0" 3.5.0 ・・・ 3.6
% sudo vi /etc/wgetrc
# httpのサイトから取得 http_proxy = http://10.20.30.40:8000/ # httpsのサイトから取得 https_proxy = http://10.20.30.40:8000/
% svn switch https://10.10.10.10/branch/aaa/bbb
% svn switch --relocate https://10.10.10.10/trunk/aaa/bbb https://10.10.10.10/branch/aaa/bbb svn: Relocate can only change the repository part of an URL
% svn switch https://10.10.10.10/trunk/aaa/bbb https://10.10.10.10/branch/aaa/bbb svn: 'https://10.10.10.10/branch/aaa/bbb' is not a working copy
% svn switch --relocate https://10.10.10.10/trunk/aaa/bbb https://10.10.10.10/branch/aaa/bbb svn: Relocate can only change the repository part of an URL
project_module :xxx do
permission :view_yyy, {:zzz => [:update]}
end
> a = nil > a.empty? NoMethodError: undefined method `empty?' for nil:NilClass
> require 'rubygems' > require 'active_support' > > a = nil > b = "" > c = [] > > a.blank? => true > b.blank? => true > c.blank? => true
> a.blank? NoMethodError: undefined method `blank?' for nil:NilClass > b.blank? NoMethodError: undefined method `blank?' for "":String
validates_numericality_of :value, :only_integer => true, :if => Proc.new { |p| p.name == "xxx"}
validates_numericality_of :value, :only_integer => true, :if => :is_num? def is_num? "xxx" == name end
<%= check_box("post","send",{:checked=>@xxx == "1"})%>
チェックなし <input id="post_send" name="post[send]" type="checkbox" value="1" /> <input name="post[send]" type="hidden" value="0" /> チェックあり <input id="post_send" name="post[send]" type="checkbox" value="1" checked="checked" /> <input name="post[send]" type="hidden" value="0" />
> foo = "abc123"
> puts 'foo'
foo
> puts '#{foo}'
#{foo}
> puts 'a\n\tb'
a\n\tb
> foo = "abc123"
> puts "foo"
foo
> puts "#{foo}"
abc123
> puts "a\n\tb"
a
b