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Placement New
In the C++ programming language, placement Syntax (programming languages), syntax allows programmers to explicitly specify the memory management of individual objects — i.e. their "placement" in memory (computing), memory. Normally, when an object is created dynamically, an allocation function is invoked in such a way that it will both allocate memory for the object, and Constructor (object-oriented programming), initialize the object within the newly allocated memory. The placement syntax allows the programmer to supply additional arguments to the allocation function. A common use is to supply a pointer (computer programming), pointer to a suitable region of storage where the object can be initialized, thus separating memory allocation from object construction. The "placement" versions of the new (C++), new and delete (C++), delete operators and functions are known as placement new and placement delete. A new ''expression'', placement or otherwise, calls a new ''function'', a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Programming Language
A programming language is a system of notation for writing computer programs. Programming languages are described in terms of their Syntax (programming languages), syntax (form) and semantics (computer science), semantics (meaning), usually defined by a formal language. Languages usually provide features such as a type system, Variable (computer science), variables, and mechanisms for Exception handling (programming), error handling. An Programming language implementation, implementation of a programming language is required in order to Execution (computing), execute programs, namely an Interpreter (computing), interpreter or a compiler. An interpreter directly executes the source code, while a compiler produces an executable program. Computer architecture has strongly influenced the design of programming languages, with the most common type (imperative languages—which implement operations in a specified order) developed to perform well on the popular von Neumann architecture. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
