freeze.rb

Path: lib/active_support/core_ext/date/freeze.rb
Last Update: Tue Jan 29 12:14:39 +0000 2013

Date memoizes some instance methods using metaprogramming to wrap the methods with one that caches the result in an instance variable.

If a Date is frozen but the memoized method hasn‘t been called, the first call will result in a frozen object error since the memo instance variable is uninitialized.

Work around by eagerly memoizing before freezing.

Ruby 1.9 uses a preinitialized instance variable so it‘s unaffected. This hack is as close as we can get to feature detection:

Required files

date  

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