Results for: "pstore"

Similar to Object#to_enum, except it returns a lazy enumerator. This makes it easy to define Enumerable methods that will naturally remain lazy if called from a lazy enumerator.

For example, continuing from the example in Object#to_enum:

# See Object#to_enum for the definition of repeat
r = 1..Float::INFINITY
r.repeat(2).first(5) # => [1, 1, 2, 2, 3]
r.repeat(2).class # => Enumerator
r.repeat(2).map{|n| n ** 2}.first(5) # => endless loop!
# works naturally on lazy enumerator:
r.lazy.repeat(2).class # => Enumerator::Lazy
r.lazy.repeat(2).map{|n| n ** 2}.first(5) # => [1, 1, 4, 4, 9]

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

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

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

Returns a Proc object that takes arguments and yields them.

This method is implemented so that a Yielder object can be directly passed to another method as a block argument.

enum = Enumerator.new { |y|
  Dir.glob("*.rb") { |file|
    File.open(file) { |f| f.each_line(&y) }
  }
}

Return the length of the hash value in bytes.

Return the length of the hash value (the digest) in bytes.

Digest::SHA256.new.digest_length * 8
# => 256
Digest::SHA384.new.digest_length * 8
# => 384
Digest::SHA512.new.digest_length * 8
# => 512

For example, digests produced by Digest::SHA256 will always be 32 bytes (256 bits) in size.

Turn this function in to a proc

Returns the Fiddle::Pointer of this handle.

Get the underlying pointer for ruby object val and return it as a Fiddle::Pointer object.

Call the free function for this pointer. Calling more than once will do nothing. Does nothing if there is no free function attached.

Returns the integer memory location of this pointer.

Cast this pointer to a ruby object.

Returns the output size of the digest, i.e. the length in bytes of the final message digest result.

Example

digest = OpenSSL::Digest.new('SHA1')
puts digest.digest_length # => 20