O

\O escape, in regular expressions, 469

object model instructions, IL, 562–568

object type, IL

converting to string, 179

definition of, 172

equality methods for, 173–176

finalizers for, 177–179

hash codes for, 176

type identity of, 179

ObjectDisposedException exception, 211

objects

definition of, 18

memory layout for, 20–21

unification with values, 22–24

OLE Automation, 4

OleView.exe utility, 423

OOM (Out of Memory), 119–120

Open methods, files, 271–273

Open Systems Interconnection (OSI) model, 291

open type of generics, 75

OpenRead method, files, 273

OpenWrite method, files, 273

operating systems, books about, 132

operator overloading, 47–49

optimistic concurrency, 535

or instruction, IL, 91, 559

OSI (Open Systems Interconnection) model, 291

out keyword, C#, 34, 35

Out of Memory (OOM), 119–120

OutOfMemoryException exception, 209

overflow, floating points, 183

overlapped I/O, 273–274

overloading methods, 32

overloading operators, 47–49

override keyword, C#, 36

overriding methods, 36–37