Results for: "Logger"

Returns true if the next row read will be a header row.

Processes fields with @converters, or @header_converters if headers is passed as true, returning the converted field set. Any converter that changes the field into something other than a String halts the pipeline of conversion for that field. This is primarily an efficiency shortcut.

Used to filter unwanted trace output

Example which only outputs lines of code executed within the Kernel class:

Tracer.add_filter do |event, file, line, id, binding, klass, *rest|
  "Kernel" == klass.to_s
end

Reinitializes delegation from a serialized object.

Allow connections from Socket soc?

Allow connections from addrinfo addr? It must be formatted like Socket#peeraddr:

["AF_INET", 10, "lc630", "192.0.2.1"]

Creates a new compiler for ERB. See ERB::Compiler.new for details

Set an error (a protected method).

‘get_option’ is an alias of ‘get’.

Returns true if the ipaddr is a link-local address. IPv4 addresses in 169.254.0.0/16 reserved by RFC 3927 and Link-Local IPv6 Unicast Addresses in fe80::/10 reserved by RFC 4291 are considered link-local.

Creates a Range object for the network address.

Returns the names of the binding’s local variables as symbols.

def foo
  a = 1
  2.times do |n|
    binding.local_variables #=> [:a, :n]
  end
end

This method is the short version of the following code:

binding.eval("local_variables")

Returns the Ruby source filename and line number of the binding object.

Returns range or nil

Returns true if this is an upper triangular matrix.

Private. Use Matrix#determinant

Returns the determinant of the matrix, using Bareiss’ multistep integer-preserving gaussian elimination. It has the same computational cost order O(n^3) as standard Gaussian elimination. Intermediate results are fraction free and of lower complexity. A matrix of Integers will have thus intermediate results that are also Integers, with smaller bignums (if any), while a matrix of Float will usually have intermediate results with better precision.

Returns the inner product of this vector with the other.

Vector[4,7].inner_product Vector[10,1]  => 47

Program name to be emitted in error message and default banner, defaults to $0.

Load the given PStore file. If read_only is true, the unmarshalled Hash will be returned. If read_only is false, a 3-tuple will be returned: the unmarshalled Hash, a checksum of the data, and the size of the data.