diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext')
3 files changed, 64 insertions, 10 deletions
diff --git a/activesupport/lib/active_support/core_ext/array/grouping.rb b/activesupport/lib/active_support/core_ext/array/grouping.rb index 767acc4e07..df37afb053 100644 --- a/activesupport/lib/active_support/core_ext/array/grouping.rb +++ b/activesupport/lib/active_support/core_ext/array/grouping.rb @@ -4,8 +4,8 @@ module ActiveSupport #:nodoc: module CoreExtensions #:nodoc: module Array #:nodoc: module Grouping - # Iterates over the array in groups of size +number+, padding any remaining - # slots with +fill_with+ unless it is +false+. + # Splits or iterates over the array in groups of size +number+, + # padding any remaining slots with +fill_with+ unless it is +false+. # # %w(1 2 3 4 5 6 7).in_groups_of(3) {|g| p g} # ["1", "2", "3"] @@ -39,6 +39,49 @@ module ActiveSupport #:nodoc: end end + # Splits or iterates over the array in +number+ of groups, padding any + # remaining slots with +fill_with+ unless it is +false+. + # + # %w(1 2 3 4 5 6 7 8 9 10).in_groups(3) {|g| p g} + # ["1", "2", "3", "4"] + # ["5", "6", "7", nil] + # ["8", "9", "10", nil] + # + # %w(1 2 3 4 5 6 7).in_groups(3, ' ') {|g| p g} + # ["1", "2", "3"] + # ["4", "5", " "] + # ["6", "7", " "] + # + # %w(1 2 3 4 5 6 7).in_groups(3, false) {|g| p g} + # ["1", "2", "3"] + # ["4", "5"] + # ["6", "7"] + def in_groups(number, fill_with = nil) + # size / number gives minor group size; + # size % number gives how many objects need extra accomodation; + # each group hold either division or division + 1 items. + division = size / number + modulo = size % number + + # create a new array avoiding dup + groups = [] + start = 0 + + number.times do |index| + length = division + (modulo > 0 && modulo > index ? 1 : 0) + padding = fill_with != false && + modulo > 0 && length == division ? 1 : 0 + groups << slice(start, length).concat([fill_with] * padding) + start += length + end + + if block_given? + groups.each{|g| yield(g) } + else + groups + end + end + # Divides the array into one or more subarrays based on a delimiting +value+ # or the result of an optional block. # diff --git a/activesupport/lib/active_support/core_ext/module/introspection.rb b/activesupport/lib/active_support/core_ext/module/introspection.rb index 40bbebb7c4..45f3e4bf5c 100644 --- a/activesupport/lib/active_support/core_ext/module/introspection.rb +++ b/activesupport/lib/active_support/core_ext/module/introspection.rb @@ -1,4 +1,14 @@ class Module + # Returns the name of the module containing this one. + # + # p M::N.parent_name # => "M" + def parent_name + unless defined? @parent_name + @parent_name = name =~ /::[^:]+\Z/ ? $`.freeze : nil + end + @parent_name + end + # Returns the module which contains this one according to its name. # # module M @@ -16,8 +26,7 @@ class Module # p Module.new.parent # => Object # def parent - parent_name = name.split('::')[0..-2] * '::' - parent_name.empty? ? Object : parent_name.constantize + parent_name ? parent_name.constantize : Object end # Returns all the parents of this module according to its name, ordered from @@ -35,10 +44,12 @@ class Module # def parents parents = [] - parts = name.split('::')[0..-2] - until parts.empty? - parents << (parts * '::').constantize - parts.pop + if parent_name + parts = parent_name.split('::') + until parts.empty? + parents << (parts * '::').constantize + parts.pop + end end parents << Object unless parents.include? Object parents @@ -70,6 +81,6 @@ class Module # Returns the names of the constants defined locally rather than the # constants themselves. See <tt>local_constants</tt>. def local_constant_names - local_constants.map(&:to_s) + local_constants.map { |c| c.to_s } end end diff --git a/activesupport/lib/active_support/core_ext/object/instance_variables.rb b/activesupport/lib/active_support/core_ext/object/instance_variables.rb index 9f1d4ed2aa..4ecaab3bbb 100644 --- a/activesupport/lib/active_support/core_ext/object/instance_variables.rb +++ b/activesupport/lib/active_support/core_ext/object/instance_variables.rb @@ -35,7 +35,7 @@ class Object # C.new(0, 1).instance_variable_names # => ["@y", "@x"] if RUBY_VERSION >= '1.9' def instance_variable_names - instance_variables.map(&:to_s) + instance_variables.map { |var| var.to_s } end else alias_method :instance_variable_names, :instance_variables |