Method: Dotenv#modify

Defined in:
lib/dotenv.rb

#modify(env = {}, &block) ⇒ Object

Modify ENV for the block and restore it to its previous state afterwards.

Note that the block is synchronized to prevent concurrent modifications to ENV, so multiple threads will be executed serially.

Parameters:

  • (defaults to: {})

    Hash of keys and values to set in ENV



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# File 'lib/dotenv.rb', line 116

def modify(env = {}, &block)
  SEMAPHORE.synchronize do
    diff = Dotenv::Diff.new
    update(env, overwrite: true)
    block.call
  ensure
    restore(diff.a, safe: true)
  end
end