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Variant type (COM) Variant is a data type in certain programming languages, particularly Visual Basic, OCaml, [1] Delphi and C++ when using the Component Object Model. It is an implementation of the eponymous concept in computer science. In Visual Basic (and Visual Basic for Applications) the Variant data type is a tagged union that can be used ...
Thread-local storage. In computer programming, thread-local storage (TLS) is a memory management method that uses static or global memory local to a thread. The concept allows storage of data that appears to be global in a system with separate threads. Many systems impose restrictions on the size of the thread-local memory block, in fact often ...
Vectorized array operations. Some compiled languages such as Ada and Fortran, and some scripting languages such as IDL, MATLAB, and S-Lang, have native support for vectorized operations on arrays. For example, to perform an element by element sum of two arrays, a and b to produce a third c, it is only necessary to write.
A memory-mapped file is a segment of virtual memory [1] that has been assigned a direct byte-for-byte correlation with some portion of a file or file-like resource. This resource is typically a file that is physically present on disk, but can also be a device, shared memory object, or other resource that an operating system can reference through a file descriptor.
Wideband delphi. The Wideband Delphi estimation method is a consensus-based technique for estimating effort. [1] It derives from the Delphi method which was developed in the 1950-1960s at the RAND Corporation as a forecasting tool. It has since been adapted across many industries to estimate many kinds of tasks, ranging from statistical data ...
Delphi is a general-purpose programming language and a software product that uses the Delphi dialect of the Object Pascal programming language and provides an integrated development environment (IDE) for rapid application development of desktop, mobile, web, and console software, [3] currently developed and maintained by Embarcadero Technologies.
In programming language theory and type theory, polymorphism is the use of a single symbol to represent multiple different types. [1] In object-oriented programming, polymorphism is the provision of a single interface to entities of different types. [2] The concept is borrowed from a principle in biology where an organism or species can have ...
The "generic programming" paradigm is an approach to software decomposition whereby fundamental requirements on types are abstracted from across concrete examples of algorithms and data structures and formalized as concepts, analogously to the abstraction of algebraic theories in abstract algebra. [6] Early examples of this programming approach ...