Programming style - duck type
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Duck typing is a style of dynamic typing where an object's valid operations are defined by which methods and properties it has rather than its class. In duck typing, functions are concerned with the aspects of an object used rather than its specific type. For example, a function taking a "Duck" would work with any object having walk and quack methods, allowing polymorphism without inheritance.
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![What is - duck typing is a style of dynamic typing in which ,[object Object],and ,[object Object],rather than its inheritance from - ,[object Object],specific interface. DUCK TYPING PROGRAMMING STYLE Presented by Abdun Nur Tomal](https://image.slidesharecdn.com/programmingstyleducktype-110731024537-phpapp02/85/Programming-style-duck-type-1-320.jpg)
![Define - may be phrased as follows: "When I see a bird that walks like a duckand swims like a duck and quacks like a duck, I call that bird a duck.“ In duck typing, one is concerned with just those aspects of an object that are ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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my code, but I don\'t know why it won\'t execute after i input ./a.out I put in gcc -Wall
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int digitCount = 0;
int specialCount = 0;
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int frequency[84];
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temp = frequency[x];
frequency[x] = frequency[loc];
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This document provides an overview of the Ruby programming language for Perl programmers. Ruby is an interpreted, object-oriented scripting language that is very similar to Perl in many ways, such as its syntax for regular expressions and control structures like loops and conditionals. However, Ruby differs from Perl in that it was designed from the start to be object-oriented and highly dynamic. The document discusses Ruby's core concepts like classes, modules, blocks and iterators in detail and provides many code examples to illustrate Ruby's syntax and features.
Ruby for Perl Programmers
The document provides an overview of the Ruby programming language for Perl programmers. Some key points:
- Ruby is an object-oriented scripting language that is interpreted, not compiled. It draws influences from Perl, Smalltalk, Lisp, and C.
- Ruby supports functional, aspect-oriented, and design-by-contract programming paradigms. It is well-suited for practices like extreme programming.
- Core concepts include classes, modules, blocks/iterators, exceptions, regular expressions and strings. Common data structures include arrays, hashes, ranges and more.
- Examples demonstrate basic syntax like variables, loops, conditions, classes and modules. Ruby emphasizes flexibility, dynamism and "
ppt18
The document provides an overview of the Ruby programming language for Perl programmers. Some key points:
- Ruby is an object-oriented scripting language that is interpreted, not compiled. It draws influences from Perl, Smalltalk, Lisp, and C.
- Ruby supports functional, aspect-oriented, and design-by-contract programming paradigms. It is well-suited for practices like extreme programming.
- Core concepts include classes, modules, blocks/iterators, exceptions, regular expressions and strings. Common data structures include arrays, hashes, ranges and more.
- Examples demonstrate basic syntax like variables, loops, conditions, classes and modules. Ruby emphasizes flexibility, dynamism and "
name name2 n2
The document provides an overview of the Ruby programming language for Perl programmers. Some key points:
- Ruby is an object-oriented scripting language that is interpreted, not compiled. It draws influences from Perl, Smalltalk, Lisp, and C.
- Ruby supports features like classes, modules, blocks/iterators, exceptions, regular expressions and threads. Everything in Ruby is an object.
- Compared to Perl, Ruby is more object-oriented, dynamic, and has built-in support for threads. Syntax also differs in some key ways.
- The document provides examples of basic Ruby syntax like variables, loops, conditions, classes and modules to illustrate how the language works.
test ppt
This document provides an overview of the Ruby programming language for Perl programmers. Ruby is an interpreted, object-oriented scripting language that is very similar to Perl in many ways, such as its syntax for regular expressions and special variables, but differs in its stronger emphasis on object-oriented principles and more dynamic features. The document discusses Ruby's history and influences, basic syntax, core classes and modules, functional programming capabilities, and ease of extension.
name name2 n
This document provides an overview of the Ruby programming language for Perl programmers. Ruby is an interpreted, object-oriented scripting language that is very similar to Perl in many ways, such as its syntax for regular expressions and special variables, but differs in its stronger emphasis on object-oriented principles and more dynamic features. The document discusses Ruby's history and influences, basic syntax, core programming concepts like classes and modules, and ways that Ruby code can be easily extended.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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Programming style - duck type
- 3. rather than with the type of the object itself. DUCK TYPING PROGRAMMING STYLE
- 6. relying on documentation, clear code, and testing to ensure correct use.
- 9. The only requirement thatfunction calculate needs in its variables is having the "+" and the "*" methods.
- 10. The duck test can be seen in the following example:As far as the function in_the_forest is concerned, the Person object is a duck: class Duck: def quack(self): print("Quaaaaaack!") def feathers(self): print("The duck has white and gray feathers.") class Person: def quack(self): print("The person imitates a duck.") def feathers(self): print("The person takes a feather from the ground and shows it.") def name(self): print("John Smith") defin_the_forest(duck): duck.quack() duck.feathers() def game(): donald = Duck() john = Person() in_the_forest(donald) in_the_forest(john) game() DUCK TYPING PROGRAMMING STYLE
- 12. Resources – Wikipedia http://en.wikipedia.org/wiki/Duck_typing#Concept_examples Dr. Dobb’s http://drdobbs.com/cpp/184401971 http://drdobbs.com/open-source Big Dingus http://bigdingus.com/2007/12/08/just-what-is-this-javascript-object-you-handed-me/ Apache Commons http://commons.apache.org/proxy/ DUCK TYPING PROGRAMMING STYLE
- 13. Resources – Wikipedia http://en.wikipedia.org/wiki/Duck_typing#Concept_examples Dr. Dobb’s http://drdobbs.com/cpp/184401971 http://drdobbs.com/open-source Big Dingus http://bigdingus.com/2007/12/08/just-what-is-this-javascript-object-you-handed-me/ Apache Commons http://commons.apache.org/proxy/ DUCK TYPING PROGRAMMING STYLE