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Get a single optional argument from the command line. If more than one argument is given, return only the first. Return nil if none are given.

Enumerates the outdated local gems yielding the local specification and the latest remote version.

This method may take some time to return as it must check each local gem against the server’s index.

Extract platform given on the command line

Sets dmp1, dmq1, iqmp for the RSA instance. They are calculated by d mod (p - 1), d mod (q - 1) and q^(-1) mod p respectively.

Permit statements lists to mark newlines within themselves.

Like Enumerable#compact, but chains operation to be lazy-evaluated.

Update the digest using given string and return self.

Update the digest using a given string and return self.

Create a new closure. If a block is given, the created closure is automatically freed after the given block is executed.

The all given arguments are passed to Fiddle::Closure.new. So using this method without block equals to Fiddle::Closure.new.

Example

Fiddle::Closure.create(TYPE_INT, [TYPE_INT]) do |closure|
  # closure is freed automatically when this block is finished.
end

Wakes up the first thread in line waiting for this lock.

Performs a Miller-Rabin probabilistic primality test for bn.

checks parameter is deprecated in version 3.0. It has no effect.

Encrypts data in a streaming fashion. Hand consecutive blocks of data to the update method in order to encrypt it. Returns the encrypted data chunk. When done, the output of Cipher#final should be additionally added to the result.

If buffer is given, the encryption/decryption result will be written to it. buffer will be resized automatically.

Returns the remaining data held in the cipher object. Further calls to Cipher#update or Cipher#final will return garbage. This call should always be made as the last call of an encryption or decryption operation, after having fed the entire plaintext or ciphertext to the Cipher instance.

If an authenticated cipher was used, a CipherError is raised if the tag could not be authenticated successfully. Only call this method after setting the authentication tag and passing the entire contents of the ciphertext into the cipher.

Enables or disables padding. By default encryption operations are padded using standard block padding and the padding is checked and removed when decrypting. If the pad parameter is zero then no padding is performed, the total amount of data encrypted or decrypted must then be a multiple of the block size or an error will occur.

See EVP_CIPHER_CTX_set_padding for further information.

Not every message digest can be computed in one single pass. If a message digest is to be computed from several subsequent sources, then each may be passed individually to the Digest instance.

Example

digest = OpenSSL::Digest.new('SHA256')
digest.update('First input')
digest << 'Second input' # equivalent to digest.update('Second input')
result = digest.digest

Returns hmac updated with the message to be authenticated. Can be called repeatedly with chunks of the message.

Example

first_chunk = 'The quick brown fox jumps '
second_chunk = 'over the lazy dog'

instance.update(first_chunk)
#=> 5b9a8038a65d571076d97fe783989e52278a492a
instance.update(second_chunk)
#=> de7c9b85b8b78aa6bc8a7a36f70a90701c9db4d9

Parses a given string as a blob that contains configuration for OpenSSL.