This method is a shortcut for converting a single row (Array) into a CSV String.
The options parameter can be anything CSV::new() understands. This method understands an additional :encoding parameter to set the base Encoding for the output. This method will try to guess your Encoding from the first non-nil field in row, if possible, but you may need to use this parameter as a backup plan.
The :row_sep option defaults to $INPUT_RECORD_SEPARATOR ($/) when calling this method.
Identical to CSV#convert(), but for header rows.
Note that this method must be called before header rows are read to have any effect.
Loads any converters requested during construction.
If field_name is set :converters (the default) field converters are set. When field_name is :header_converters header converters are added instead.
The :unconverted_fields option is also activated for :converters calls, if requested.
The actual work method for adding converters, used by both CSV.convert() and CSV.header_convert().
This method requires the var_name of the instance variable to place the converters in, the const Hash to lookup named converters in, and the normal parameters of the CSV.convert() and CSV.header_convert() methods.
Return the appropriate error message in POSIX-defined format. If no error has occurred, returns nil.
Returns true if this is a lower triangular matrix.
Returns true if the set is a proper superset of the given set.
Returns the current execution stack—an array containing backtrace location objects.
See Thread::Backtrace::Location for more information.
The optional start parameter determines the number of initial stack entries to omit from the top of the stack.
A second optional length parameter can be used to limit how many entries are returned from the stack.
Returns nil if start is greater than the size of current execution stack.
Optionally you can pass a range, which will return an array containing the entries within the specified range.
Generate a JSON document from the Ruby data structure obj and return it. This method disables the checks for circles in Ruby objects.
WARNING: Be careful not to pass any Ruby data structures with circles as obj argument because this will cause JSON to go into an infinite loop.
Generate a JSON document from the Ruby data structure obj and return it. The returned document is a prettier form of the document returned by unparse.
The opts argument can be used to configure the generator. See the generate method for a more detailed explanation.
Returns the number of malloc() allocations.
Only available if ruby was built with CALC_EXACT_MALLOC_SIZE.
Get the ‘current’ server.
In the context of execution taking place within the main thread of a dRuby server (typically, as a result of a remote call on the server or one of its objects), the current server is that server. Otherwise, the current server is the primary server.
If the above rule fails to find a server, a DRbServerNotFound error is raised.
Get the ‘current’ server.
In the context of execution taking place within the main thread of a dRuby server (typically, as a result of a remote call on the server or one of its objects), the current server is that server. Otherwise, the current server is the primary server.
If the above rule fails to find a server, a DRbServerNotFound error is raised.
Registers server with DRb.
This is called when a new DRb::DRbServer is created.
If there is no primary server then server becomes the primary server.
Example:
require 'drb' s = DRb::DRbServer.new # automatically calls regist_server DRb.fetch_server s.uri #=> #<DRb::DRbServer:0x...>
Registers server with DRb.
This is called when a new DRb::DRbServer is created.
If there is no primary server then server becomes the primary server.
Example:
require 'drb' s = DRb::DRbServer.new # automatically calls regist_server DRb.fetch_server s.uri #=> #<DRb::DRbServer:0x...>
Removes server from the list of registered servers.
Removes server from the list of registered servers.
Retrieves the server with the given uri.
See also regist_server and remove_server.
Add observer as an observer on this object. so that it will receive notifications.
observer
the object that will be notified of changes.
func
Symbol naming the method that will be called when this Observable has changes.
This method must return true for observer.respond_to? and will receive *arg when notify_observers is called, where *arg is the value passed to notify_observers by this Observable
Remove observer as an observer on this object so that it will no longer receive notifications.
observer
An observer of this Observable
Remove all observers associated with this object.
Return the number of observers associated with this object.
Notify observers of a change in state if this object’s changed state is true.
This will invoke the method named in add_observer, passing *arg. The changed state is then set to false.
*arg
Any arguments to pass to the observers.