Raised when a mathematical function is evaluated outside of its domain of definition.
For example, since cos returns values in the range -1..1, its inverse function acos is only defined on that interval:
Math.acos(42)
produces:
Math::DomainError: Numerical argument is out of domain - "acos"
Raised by Encoding and String methods when the string being transcoded contains a byte invalid for the either the source or target encoding.
Raised by Timeout.timeout when the block times out.
A mixin that provides methods for parsing C struct and prototype signatures.
require 'fiddle/import' include Fiddle::CParser #=> Object parse_ctype('int') #=> Fiddle::TYPE_INT parse_struct_signature(['int i', 'char c']) #=> [[Fiddle::TYPE_INT, Fiddle::TYPE_CHAR], ["i", "c"]] parse_signature('double sum(double, double)') #=> ["sum", Fiddle::TYPE_DOUBLE, [Fiddle::TYPE_DOUBLE, Fiddle::TYPE_DOUBLE]]
A DSL that provides the means to dynamically load libraries and build modules around them including calling extern functions within the C library that has been loaded.
require 'fiddle' require 'fiddle/import' module LibSum extend Fiddle::Importer dlload './libsum.so' extern 'double sum(double*, int)' extern 'double split(double)' end
Used to construct C classes (CUnion, CStruct, etc)
Fiddle::Importer#struct and Fiddle::Importer#union wrap this functionality in an easy-to-use manner.
OpenSSL IO buffering mix-in module.
This module allows an OpenSSL::SSL::SSLSocket to behave like an IO.
You typically won’t use this module directly, you can see it implemented in OpenSSL::SSL::SSLSocket.
The GC profiler provides access to information on GC runs including time, length and object space size.
Example:
GC::Profiler.enable require 'rdoc/rdoc' GC::Profiler.report GC::Profiler.disable
See also GC.count, GC.malloc_allocated_size and GC.malloc_allocations
Mixin module that provides the following:
Access to the CGI environment variables as methods. See documentation to the CGI class for a list of these variables. The methods are exposed by removing the leading HTTP_ (if it exists) and downcasing the name. For example, auth_type will return the environment variable AUTH_TYPE, and accept will return the value for HTTP_ACCEPT.
Access to cookies, including the cookies attribute.
Access to parameters, including the params attribute, and overloading [] to perform parameter value lookup by key.
The initialize_query method, for initializing the above mechanisms, handling multipart forms, and allowing the class to be used in “offline” mode.
The Observable module extended to DRb. See Observable for details.
This module has all methods of FileUtils module, but it outputs messages before acting. This equates to passing the :verbose flag to methods in FileUtils.
The HTTPHeader module defines methods for reading and writing HTTP headers.
It is used as a mixin by other classes, to provide hash-like access to HTTP header values. Unlike raw hash access, HTTPHeader provides access via case-insensitive keys. It also provides methods for accessing commonly-used HTTP header values in more convenient formats.
A template for stream parser listeners. Note that the declarations (attlistdecl, elementdecl, etc) are trivially processed; REXML doesn’t yet handle doctype entity declarations, so you have to parse them out yourself.
ignorable_whitespace
WARNING These methods are certainly going to change, until DTDs are fully supported. Be aware of this.
start_document end_document doctype elementdecl attlistdecl entitydecl notationdecl cdata xmldecl comment
A template for stream parser listeners. Note that the declarations (attlistdecl, elementdecl, etc) are trivially processed; REXML doesn’t yet handle doctype entity declarations, so you have to parse them out yourself.
Provides a set of builders for various RSS objects
Feeds
Elements