Computer Science: Reflections on the Field, Reflections from the Field

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Net-assemblies and Java-archives. A language supporting reflection provides a number of features available at runtime that would otherwise be difficult to accomplish in a lower-level language.

The Power of Computer Science

Some of these features are the abilities to:. These features can be implemented in different ways. In MOO , reflection forms a natural part of everyday programming idiom.

Introduction

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When verbs methods are called, various variables such as verb the name of the verb being called and this the object on which the verb is called are populated to give the context of the call. Security is typically managed by accessing the caller stack programmatically: Since callers is a list of the methods by which the current verb was eventually called, performing tests on callers [1] the command invoked by the original user allows the verb to protect itself against unauthorised use. Compiled languages rely on their runtime system to provide information about the source code.

A compiled Objective-C executable, for example, records the names of all methods in a block of the executable, providing a table to correspond these with the underlying methods or selectors for these methods compiled into the program. In a compiled language that supports runtime creation of functions, such as Common Lisp , the runtime environment must include a compiler or an interpreter.

Reflection can be implemented for languages not having built-in reflection facilities by using a program transformation system to define automated source-code changes.

The following code snippets create an instance foo of class Foo and invoke its method PrintHello. For each programming language , normal and reflection-based call sequences are shown. The following is an example in C :. This Delphi example assumes that a TFoo class has been declared in a unit called Unit1 :. This is a notable example, since Delphi is an unmanaged, fully natively compiled language, unlike most other languages that support reflection.

Its language architecture inherits from strongly typed Pascal, but with significant influence from Smalltalk.

Reflection in Java

Compare with the other examples here, many of which are dynamic or script languages like Perl, Python or PHP, or languages with a runtime like Java or C. The following is an example in eC :. The following is an example in Go :. The following is an example in Java :.

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The following is an example in Perl :. The following is an example in Python :. The following is an example in R :. The following is an example in Ruby :. From Wikipedia, the free encyclopedia. Not to be confused with Reflection computer graphics. Proceedings of the ACL , pp. A sentimental education: Sentiment analysis using subjectivity summarization based on minimum cuts.

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Computer Science: Reflections on the Field, Reflections from the Field provides a concise characterization of key ideas that lie at the core of computer science. Computer Science: Reflections on the Field,. Reflections from the Field. Committee on the Fundamentals of Computer Science: Challenges and Opportunities.

Regina Barzilay and Lillian Lee. Some of these features are the abilities to:. These features can be implemented in different ways. In MOO , reflection forms a natural part of everyday programming idiom. When verbs methods are called, various variables such as verb the name of the verb being called and this the object on which the verb is called are populated to give the context of the call.

Security is typically managed by accessing the caller stack programmatically: Since callers is a list of the methods by which the current verb was eventually called, performing tests on callers [1] the command invoked by the original user allows the verb to protect itself against unauthorised use. Compiled languages rely on their runtime system to provide information about the source code.

A compiled Objective-C executable, for example, records the names of all methods in a block of the executable, providing a table to correspond these with the underlying methods or selectors for these methods compiled into the program. In a compiled language that supports runtime creation of functions, such as Common Lisp , the runtime environment must include a compiler or an interpreter.

Reflection can be implemented for languages not having built-in reflection facilities by using a program transformation system to define automated source-code changes. The following code snippets create an instance foo of class Foo and invoke its method PrintHello. For each programming language , normal and reflection-based call sequences are shown.

The following is an example in C :. This Delphi example assumes that a TFoo class has been declared in a unit called Unit1 :. This is a notable example, since Delphi is an unmanaged, fully natively compiled language, unlike most other languages that support reflection. Its language architecture inherits from strongly typed Pascal, but with significant influence from Smalltalk.

click here Compare with the other examples here, many of which are dynamic or script languages like Perl, Python or PHP, or languages with a runtime like Java or C. The following is an example in eC :. The following is an example in Go :. The following is an example in Java :.

A Reflection: Lessons Learnt at a Top Computer Science School

The following is an example in Perl :. The following is an example in Python :. The following is an example in R :. The following is an example in Ruby :. From Wikipedia, the free encyclopedia. Not to be confused with Reflection computer graphics. This section does not cite any sources.

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