Error raised by the DRb module when an attempt is made to refer to the context’s current drb server but the context does not have one. See current_server.
Class representing a drb server instance.
A DRbServer must be running in the local process before any incoming dRuby calls can be accepted, or any local objects can be passed as dRuby references to remote processes, even if those local objects are never actually called remotely. You do not need to start a DRbServer in the local process if you are only making outgoing dRuby calls passing marshalled parameters.
Unless multiple servers are being used, the local DRbServer is normally started by calling DRb.start_service.
Timer id conversion keeps objects alive for a certain amount of time after their last access. The default time period is 600 seconds and can be changed upon initialization.
To use TimerIdConv:
DRb.install_id_conv TimerIdConv.new 60 # one minute
Eigenvalues and eigenvectors of a real matrix.
Computes the eigenvalues and eigenvectors of a matrix A.
If A is diagonalizable, this provides matrices V and D such that A = V*D*V.inv, where D is the diagonal matrix with entries equal to the eigenvalues and V is formed by the eigenvectors.
If A is symmetric, then V is orthogonal and thus A = V*D*V.t
For an m-by-n matrix A with m >= n, the LU decomposition is an m-by-n unit lower triangular matrix L, an n-by-n upper triangular matrix U, and a m-by-m permutation matrix P so that L*U = P*A. If m < n, then L is m-by-m and U is m-by-n.
The LUP decomposition with pivoting always exists, even if the matrix is singular, so the constructor will never fail. The primary use of the LU decomposition is in the solution of square systems of simultaneous linear equations. This will fail if singular? returns true.
Unexpected response from the server.
Represents SMTP error code 4xx, a temporary error.
An abstract class for enumerating pseudo-prime numbers.
Concrete subclasses should override succ, next, rewind.
An implementation of PseudoPrimeGenerator which uses a prime table generated by trial division.
Represents an XML Instruction; IE, <? … ?> TODO: Add parent arg (3rd arg) to constructor
A RingServer allows a Rinda::TupleSpace to be located via UDP broadcasts. Default service location uses the following steps:
A RingServer begins listening on the network broadcast UDP address.
A RingFinger sends a UDP packet containing the DRb URI where it will listen for a reply.
The RingServer receives the UDP packet and connects back to the provided DRb URI with the DRb service.
A RingServer requires a TupleSpace:
ts = Rinda::TupleSpace.new rs = Rinda::RingServer.new
RingServer can also listen on multicast addresses for announcements. This allows multiple RingServers to run on the same host. To use network broadcast and multicast:
ts = Rinda::TupleSpace.new rs = Rinda::RingServer.new ts, %w[Socket::INADDR_ANY, 239.0.0.1 ff02::1]
The InvalidRSSError error is the base class for a variety of errors related to a poorly-formed RSS feed. Rescue this error if you only care that a file could be invalid, but don’t care how it is invalid.
BasicSpecification is an abstract class which implements some common code used by both Specification and StubSpecification.