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Reflection can be used for observing and modifying program execution at runtime. A reflection-oriented program component can monitor the execution of an enclosure of code and can modify itself according to a desired goal of that enclosure. This is typically accomplished by dynamically assigning program code at runtime.
Programming languages and computing platforms that typically support reflective programming (reflection) include dynamically typed languages such as Smalltalk, Perl, PHP, Python, VBScript, and JavaScript. Also the .NET languages are supported and the Maude system of rewriting logic.
The program is aimed at children between the ages of 9-12. [7] Squeak is a modern, open-source, full-featured implementation of the Smalltalk language and environment. Smalltalk is an object-oriented, dynamically typed, reflective programming language created to underpin the "new world" of computing exemplified by "human-computer symbiosis". [8]
The ability of a programming language to be its own metalanguage allows reflective programming, and is termed reflection. [4] Reflection is a valuable language feature to facilitate metaprogramming. Metaprogramming was popular in the 1970s and 1980s using list processing languages such as Lisp .
Agda is a total functional programming language, i.e., each program in it must terminate and all possible patterns must be matched. Without this feature, the logic behind the language becomes inconsistent, and it becomes possible to prove arbitrary statements.
Agora is a reflective, prototype-based, object-oriented programming language that is based exclusively on message passing and not delegation.Agora was intended to show that even subject to that limit, it is possible to build a full object-oriented language that features inheritance, cloning, and reflective operators.
Programming languages are used for controlling the behavior of a machine (often a computer). Like natural languages, programming languages follow rules for syntax and semantics. There are thousands of programming languages [1] and new ones are created every year.
Examples of qualitative data include field notes, student work/artifacts, interviews, focus groups, digital pictures, video, reflective journals. [ 6 ] Quantitative and qualitative data is generally captured through two forms of assessments: formative and summative.