In typography, the portion of a lowercase letter that rises above the main body of the letter (that is, above the height of a lowercase x). For example, the letter t’s ascender is the part of the vertical line above the horizontal line.
- aspect-oriented programming
Aspect-oriented programming, or AOP, complements object-oriented programming by allowing the developer to dynamically modify the static object-oriented model to create a system that can grow to meet new requirements, allowing an application to adopt new characteristics as it develops. *AOP provides a solution for abstracting cross-cutting code that spans object hierarchies without functional relevance to […]
- aspect-oriented software development
Aspect-oriented software development (AOSD) is a new approach to software development that addresses limitations inherent in other approaches, including object-oriented programming. AOSD aims to address crosscutting concerns by providing means for systematic identification, separation, representation and composition. Crosscutting concerns are encapsulated in separate modules, known as aspects, so that localization can be promoted. This results […]
- Aspect Ratio
In computer graphics, the relative horizontal and vertical sizes. For example, if a graphic has an aspect ratio of 2:1, it means that the width is twice as large as the height. When resizing graphics, it is important to maintain the aspect ratio to avoid stretching the graphic out of proportion. The term is also […]
Aspects in aspect-oriented programming (AOP) package advice and pointcuts into functional units in much the same way that object-oriented programming uses classes to package fields and methods.
- aspherical surface
A lens surface with more than one radius of curvature (i.e., the surface does not form part of a sphere). The aspherical elements of a lens help compensate for many lens aberrations common in simpler lens designs. Aspherical elements are particularly important for wide-angle lenses, since they are prone to distortion. See “A Quick Guide […]