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| author | Akira Matsuda <ronnie@dio.jp> | 2013-01-04 14:54:58 +0900 |
|---|---|---|
| committer | Akira Matsuda <ronnie@dio.jp> | 2013-01-04 14:54:58 +0900 |
| commit | 257348405a9c9bfb9ea656bd12a2d0db5cb857ee (patch) | |
| tree | ee03c12e3ac9aaf74fd26f6c288605fc75a15a70 /guides/source | |
| parent | ffaad630e2166cd77ff4761f1e3d1b555beb9ee5 (diff) | |
| download | rails-257348405a9c9bfb9ea656bd12a2d0db5cb857ee.tar.gz rails-257348405a9c9bfb9ea656bd12a2d0db5cb857ee.tar.bz2 rails-257348405a9c9bfb9ea656bd12a2d0db5cb857ee.zip | |
Ruby 1.8 support had gone
instance_variable_names remains for internal use, but it's not that useful for the users anymore
Diffstat (limited to 'guides/source')
| -rw-r--r-- | guides/source/active_support_core_extensions.md | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/guides/source/active_support_core_extensions.md b/guides/source/active_support_core_extensions.md index 23736020ec..b0c3400ea8 100644 --- a/guides/source/active_support_core_extensions.md +++ b/guides/source/active_support_core_extensions.md @@ -422,24 +422,6 @@ NOTE: Defined in `active_support/core_ext/object/with_options.rb`. Active Support provides several methods to ease access to instance variables. -#### `instance_variable_names` - -Ruby 1.8 and 1.9 have a method called `instance_variables` that returns the names of the defined instance variables. But they behave differently, in 1.8 it returns strings whereas in 1.9 it returns symbols. Active Support defines `instance_variable_names` as a portable way to obtain them as strings: - -```ruby -class C - def initialize(x, y) - @x, @y = x, y - end -end - -C.new(0, 1).instance_variable_names # => ["@y", "@x"] -``` - -WARNING: The order in which the names are returned is unspecified, and it indeed depends on the version of the interpreter. - -NOTE: Defined in `active_support/core_ext/object/instance_variables.rb`. - #### `instance_values` The method `instance_values` returns a hash that maps instance variable names without "@" to their |