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Published on 2009-11-07T12:48:08Z
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what is an abstract data type in object oriented programming? I gone through wiki.But i dint get cleared.Please make me clear
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;; structure representing homework points
;; nr: number - the number of the homework
;; points: number - the number of points reached
(define-struct homework (nr points))
;; parse-homework: (list of number pairs) -> (list of homework)
;; The procedure takes a list of number pairs and produces…
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Okay so I have started a new language in class. We are learning Scheme and i'm not sure on how to do it. When I say learning a new language, I mean thrown a homework and told to figure it out. A couple of them have got me stumped.
My first problem is:
Write a Scheme function that returns true (the…
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I'm very new to Unix, and currently taking a class learning the basics of the system and its commands.
I'm looking for a single command line to list off all of the user home directories in alphabetical order from the /etc/passwd directory. This applies only to the home directories, and not the contents…
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Hi,
For a school project i need to write or use a online programming editor. It is a part of a bigger project. I thought of a java application, php/html/javascript or flash.
I have a couple of things i could do:
Find a good working application and edit it so it works with the rest of the project
Find…
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Consider a disk file containing 100 records
a. How many comparisons would be required on the average to find a record using sequential search, if the record is known to be in the file?
I figured out that this is 100/2 = 50.
b. If the record has a 68% probability of being in the file, how many comparisons…
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Hi, I wonder if anyone can help out here, I'm trying to understand how use an objects properties across multiple non class pages,but I can't seem to be able to get my head around everything i have tried so far.
For example a class called person;
class person {
static $name;
}
but i have…
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Hi!
I want to ask you to provide me with some articles (maybe books), which you possibly have found very convincing criticising the OOP methodology.
I have read some in the WWW on this topic and I didn't really find a 'definitive demotivator'.
It's not much about my personal attitude to the OOP…
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Im used to java and creating UML.. and i was wondering how can PHP be OOP, the objects live only until you make a request.. then they destroy, so if im using a database is useless to create a class and add the members (variables) to the class, they will be useless.. i cant pass the main system object…
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I know this is a silly question but i don't understand Access Modifiers in OOP.
Why do we make for example in JAVA instance variables private and then use public getter and setter methods to access them? I mean whats the reasoning/logic behind this?
You still get to the instance variable but why use…
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Frameworks being all OOP, would it not be wise to go into frameworks without having a solid background in OOP? I can write basic classes but nothing too fancy or abstract.
How much should I know of OOP before moving to frameworks?
Right now I am PHP Object-Oriented Programming to learn OOP.
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