CSC/ECE 517 Fall 2010/ch4 4g HW: Difference between revisions

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As you may recall from the previous chapter, metaprogramming can be defined as "the technique that allows us to write programs that can manipulate other programs or themselves as a part of their data". Thus it allows us to add behavior to classes or objects that was not previously specified, often done at compile time instead of runtime. The same basic concepts still apply here, although in a few different fashions for dynamically typed languages instead of those that are statically typed.  
As you may recall from the previous chapter, metaprogramming can be defined as "the technique that allows us to write programs that can manipulate other programs or themselves as a part of their data". Thus it allows us to add behavior to classes or objects that was not previously specified, often done at compile time instead of runtime. The same basic concepts still apply here, although in a few different fashions for dynamically typed languages instead of those that are statically typed.  


This chapter will begin with a brief overview of object-oriented dynamic programming languages, or languages with an object-oriented bent, and progress into a further analysis of dynamic typing within those dynamic languages. The majority of the chapter will then cover metaprogramming within the previous described environment, offering examples, common methods of use, and existence in real-world software projects. Examples will be given to illustrate important concepts, and will be expressed in sample object-oriented dynamically typed languages.
This chapter will begin with a brief overview of object-oriented dynamic programming languages, or languages with an object-oriented bent, and progress into a further analysis of dynamic typing within those dynamic languages. The majority of the chapter will then cover metaprogramming within the previous described environment, offering examples, common methods of use, and existence in real-world software projects. Examples will be given to illustrate important concepts, and will be expressed in sample object-oriented dynamically typed languages.

Revision as of 15:20, 18 October 2010


Introduction

Drawing from the concepts discussed in Chapter 2 Section 24, Metaprogramming in Statically Typed Languages, we will continue to examine metaprogramming concepts in the environment of dynamically typed languages. As always, the focus will be on object-oriented languages to demonstrate the common usages of metaprogramming.


As you may recall from the previous chapter, metaprogramming can be defined as "the technique that allows us to write programs that can manipulate other programs or themselves as a part of their data". Thus it allows us to add behavior to classes or objects that was not previously specified, often done at compile time instead of runtime. The same basic concepts still apply here, although in a few different fashions for dynamically typed languages instead of those that are statically typed.


This chapter will begin with a brief overview of object-oriented dynamic programming languages, or languages with an object-oriented bent, and progress into a further analysis of dynamic typing within those dynamic languages. The majority of the chapter will then cover metaprogramming within the previous described environment, offering examples, common methods of use, and existence in real-world software projects. Examples will be given to illustrate important concepts, and will be expressed in sample object-oriented dynamically typed languages.

Dynamic Languages

[[1]]

Definition

Dynamic languages (with dynamic typing):

Pure oo: Ruby

Not pure oo but designed mainly for that purpose: Python

Not oo but has elements: Perl

Usage and Examples

Dynamic Typing

[[2]]

Definition.

How different from static.

Examples of:

Ruby

Python

Perl

Metaprogramming

Definition.

How the implementation is similar to or different from static.

Examples of:

Ruby

Python

Perl

Impact and Development

Real-world examples.

Proposed improvements in the given language-examples.

Conclusion

Review everything.

References