Process::Status encapsulates the information on the status of a running or terminated system process. The built-in variable $? is either nil or a Process::Status object.
fork { exit 99 } #=> 26557 Process.wait #=> 26557 $?.class #=> Process::Status $?.to_i #=> 25344 $? >> 8 #=> 99 $?.stopped? #=> false $?.exited? #=> true $?.exitstatus #=> 99
Posix systems record information on processes using a 16-bit integer. The lower bits record the process status (stopped, exited, signaled) and the upper bits possibly contain additional information (for example the program’s return code in the case of exited processes). Pre Ruby 1.8, these bits were exposed directly to the Ruby program. Ruby now encapsulates these in a Process::Status object. To maximize compatibility, however, these objects retain a bit-oriented interface. In the descriptions that follow, when we talk about the integer value of stat, we’re referring to this 16 bit value.
Raised by Encoding and String methods when a transcoding operation fails.
Raised by Encoding and String methods when the string being transcoded contains a byte invalid for the either the source or target encoding.
File::Constants provides file-related constants. All possible file constants are listed in the documentation but they may not all be present on your platform.
If the underlying platform doesn’t define a constant the corresponding Ruby constant is not defined.
Your platform documentations (e.g. man open(2)) may describe more detailed information.
Adds Windows type aliases to the including class for use with Fiddle::Importer.
The aliases added are:
ATOM
BOOL
BYTE
DWORD
DWORD32
DWORD64
HANDLE
HDC
HINSTANCE
HWND
LPCSTR
LPSTR
PBYTE
PDWORD
PHANDLE
PVOID
PWORD
UCHAR
UINT
ULONG
WORD
Socket::Constants provides socket-related constants. All possible socket constants are listed in the documentation but they may not all be present on your platform.
If the underlying platform doesn’t define a constant the corresponding Ruby constant is not defined.
The WIN32OLE::VARIANT module includes constants of VARIANT type constants. The constants is used when creating WIN32OLE_VARIANT object.
obj = WIN32OLE_VARIANT.new("2e3", WIN32OLE::VARIANT::VT_R4) obj.value # => 2000.0
This module has all methods of FileUtils module, but never changes files/directories. This equates to passing the :noop flag to methods in FileUtils.
Logging severity.
This is a set of entity constants – the ones defined in the XML specification. These are gt, lt, amp, quot and apos. CAUTION: these entities does not have parent and document
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