Rails 4.2
Rails 4.2
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Thread

class Thread

Parent:
Object

Public Instance Methods

freeze() Show source

Freezes the thread so that thread local variables cannot be set via #thread_variable_set, nor can fiber local variables be set.

me = Thread.current
me.freeze
me.thread_variable_set(:oliver, "a")  #=> RuntimeError: can't modify frozen thread locals
me[:oliver] = "a"                     #=