Value Types and Object Classes
نویسنده
چکیده
Elements of the speciication and programming language ABEL are explained by examples. It is argued that a programming language should allow a maximum of programming detail to be expressed applicatively, h o w ever, imperative mechanisms are useful for controlling eeciency in terms of computation time and memory space, and expressing interactions with the computer environment a s w ell as concurrent computer processes. The applicative sublanguage should be well separated from the imperative language mechanisms. An important side issue is the use of data pointers in ways that are not detrimental to the program logic. Concurrency is not considered.
منابع مشابه
Change Detection Gamasiab River Margins in Kermanshah by Comparison Pixel Base and Object Orientd Algorithms
Introduction Land use reflects the interactive characteristics of humans and the environment and describes how human exploitation works for one or more targets on the ground. Land use is usually defined on the basis of human use of the land, with an emphasis on the functional role of land in economic activities. Land use, which is associated with human activity, is undergoing change over time....
متن کاملObject Level Strategy for Spectral Quality Assessment of High Resolution Pan-sharpen Images
Panchromatic and multi-spectral images produced by the remote sensing satellites are fused together to provide a multi-spectral image with a high spatial resolution at the same time. The spectral quality of the fused images is very important because the quality of a large number of remote sensing products depends on it. Due to the importance of the spectral quality of the fused images, its eval...
متن کاملProgramming Objects with ML-ART, an Extension to ML with Abstract and Record Types
Class-based objects can be programmed directly and ee-ciently in a simple extension to ML. The representation of objects, based on abstract and record types, allows all usual operations such as multiple inheritance, object returning capability, and message transmission to themselves as well as to their super classes. There is, however, no implicit coercion from objects to corresponding ones of ...
متن کاملComparing the accuracy of pixel and object-based classification methods in mapping vegetation types (Case study: Marjan Boroujen)
This article has no abstract.
متن کاملA type-passing implementation of value types and genericity
classes cannot be instantiated, but can be extended by any kind of class. They can extend only other abstract classes. There is a distinguished abstract class called Object which is the ultimate superclass of any other class. A class containing abstract methods, either declared or inherited, must itself be declared abstract. Reference classes are similar to traditional Java classes: their insta...
متن کاملGeneral relativistic hydrodynamic flows around a static compact object in final stages of accretion flow
Dynamics of stationary axisymmetric configuration of the viscous accreting fluids surrounding a non-rotating compact object in final stages of accretion flow is presented here. For the special case of thin disk approximation, the relativistic fluid equations ignoring self-gravity of the disk are derived in Schwarzschild geometry. For two different state equations, two sets of self-consistent an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1992