Return a hash for statistics generated for the –yjit-stats command line option. Return nil when option is not passed or unavailable.
(see Gem::Resolver::Molinillo::ResolutionState#unused_unwind_options)
Returns a list of the undefined instance methods defined in mod. The undefined methods of any ancestors are not included.
Execute the provided block, but preserve the rounding mode
BigDecimal.save_rounding_mode do BigDecimal.mode(BigDecimal::ROUND_MODE, :up) puts BigDecimal.mode(BigDecimal::ROUND_MODE) end
For use with the BigDecimal::ROUND_*
See BigDecimal.mode
Unpacks sockaddr into port and ip_address.
sockaddr should be a string or an addrinfo for AF_INET/AF_INET6.
sockaddr = Socket.sockaddr_in(80, "127.0.0.1") p sockaddr #=> "\x02\x00\x00P\x7F\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00" p Socket.unpack_sockaddr_in(sockaddr) #=> [80, "127.0.0.1"]
Packs path as an AF_UNIX
sockaddr string.
Socket.sockaddr_un("/tmp/sock") #=> "\x01\x00/tmp/sock\x00\x00..."
Returns true
if and only if the scan pointer is at the beginning of the line.
s = StringScanner.new("test\ntest\n") s.bol? # => true s.scan(/te/) s.bol? # => false s.scan(/st\n/) s.bol? # => true s.terminate s.bol? # => true
Returns reference counter of Dispatch interface of WIN32OLE
object. You should not use this method because this method exists only for debugging WIN32OLE
.
Returns the array of WIN32OLE_METHOD object . The element of the array is property (settable) of WIN32OLE
object.
excel = WIN32OLE.new('Excel.Application') properties = excel.ole_func_methods
Initialize WIN32OLE
object(ActiveX Control) by calling IPersistMemory::InitNew.
Before calling OLE method, some kind of the ActiveX controls created with MFC should be initialized by calling IPersistXXX::InitNew.
If and only if you received the exception “HRESULT error code: 0x8000ffff catastrophic failure”, try this method before invoking any ole_method.
obj = WIN32OLE.new("ProgID_or_GUID_of_ActiveX_Control") obj.ole_activex_initialize obj.method(...)
Invoked as a callback whenever a singleton method is undefined in the receiver.
module Chatty def Chatty.singleton_method_undefined(id) puts "Undefining #{id.id2name}" end def Chatty.one() end class << self undef_method(:one) end end
produces:
Undefining one
Establishes proc on thr as the handler for tracing, or disables tracing if the parameter is nil
.
Adds proc as a handler for tracing.
Establishes _proc_ as the handler for tracing, or disables tracing if the parameter is +nil+. *Note:* this method is obsolete, please use TracePoint instead. _proc_ takes up to six parameters: * an event name * a filename * a line number * an object id * a binding * the name of a class _proc_ is invoked whenever an event occurs. Events are: +c-call+:: call a C-language routine +c-return+:: return from a C-language routine +call+:: call a Ruby method +class+:: start a class or module definition +end+:: finish a class or module definition +line+:: execute code on a new line +raise+:: raise an exception +return+:: return from a Ruby method Tracing is disabled within the context of _proc_. class Test def test a = 1 b = 2 end end set_trace_func proc { |event, file, line, id, binding, classname| printf "%8s %s:%-2d %10s %8s\n", event, file, line, id, classname } t = Test.new t.test line prog.rb:11 false c-call prog.rb:11 new Class c-call prog.rb:11 initialize Object c-return prog.rb:11 initialize Object c-return prog.rb:11 new Class line prog.rb:12 false call prog.rb:2 test Test line prog.rb:3 test Test line prog.rb:4 test Test return prog.rb:4 test Test
Note that for c-call
and c-return
events, the binding returned is the binding of the nearest Ruby method calling the C method, since C methods themselves do not have bindings.
Counts objects size (in bytes) for each type.
Note that this information is incomplete. You need to deal with this information as only a HINT. Especially, total size of T_DATA may be wrong.
It returns a hash as:
{:TOTAL=>1461154, :T_CLASS=>158280, :T_MODULE=>20672, :T_STRING=>527249, ...}
If the optional argument, result_hash, is given, it is overwritten and returned. This is intended to avoid probe effect.
The contents of the returned hash is implementation defined. It may be changed in future.
This method is only expected to work with C Ruby.
Counts objects for each T_DATA
type.
This method is only for MRI developers interested in performance and memory usage of Ruby programs.
It returns a hash as:
{RubyVM::InstructionSequence=>504, :parser=>5, :barrier=>6, :mutex=>6, Proc=>60, RubyVM::Env=>57, Mutex=>1, Encoding=>99, ThreadGroup=>1, Binding=>1, Thread=>1, RubyVM=>1, :iseq=>1, Random=>1, ARGF.class=>1, Data=>1, :autoload=>3, Time=>2} # T_DATA objects existing at startup on r32276.
If the optional argument, result_hash, is given, it is overwritten and returned. This is intended to avoid probe effect.
The contents of the returned hash is implementation specific and may change in the future.
In this version, keys are Class
object or Symbol
object.
If object is kind of normal (accessible) object, the key is Class
object. If object is not a kind of normal (internal) object, the key is symbol name, registered by rb_data_type_struct.
This method is only expected to work with C Ruby.
Counts objects for each T_IMEMO
type.
This method is only for MRI developers interested in performance and memory usage of Ruby programs.
It returns a hash as:
{:imemo_ifunc=>8, :imemo_svar=>7, :imemo_cref=>509, :imemo_memo=>1, :imemo_throw_data=>1}
If the optional argument, result_hash, is given, it is overwritten and returned. This is intended to avoid probe effect.
The contents of the returned hash is implementation specific and may change in the future.
In this version, keys are symbol objects.
This method is only expected to work with C Ruby.
Load the document contained in filename
. Returns the yaml contained in filename
as a Ruby object, or if the file is empty, it returns the specified fallback
return value, which defaults to false
.
NOTE: This method *should not* be used to parse untrusted documents, such as YAML
documents that are supplied via user input. Instead, please use the safe_load_file
method.