On 03/23/2011 11:06 AM, Stephen wrote:
> This is a great bit of information, One thing he does not mention is
> the similarities in all of these languages, you learn one the others
> get somewhat easier... (not all but many)
Good point... And you are right in a way, but not completely.
You basically have four (actually three) different programming
methodologies:
1) Scripting - This will be languages like Bash but advanced scripting
can be accomplished with Perl, Python, and Ruby
Scripting languages are all about accomplishing a single task and
ending. Programs should never be persistantly running with one (IMHO)
and only one exception, services. These are designed to generally use a
series of utilities, and accomplish a "task" then end. Sometimes that
task is to get a service running, in which case it may stay running to
wait for the service to end, then clean up. But that is the only time a
script should really stay running. A perfect place for scripts are
command line programs, and cron jobs. Many people would combine
Procedural and Scripting as the same thing. To me they are different
due to how they are used, and the techniques you use would therefore change.
2) Procedural - C/Perl/PHP
Procedural programming you teach the system what needs done. It is like
writing a how to manual. Do this, then this, then that. Common steps
are often placed into separate packages called function or procedures
depending on the language (some often say functions return values,
procedures do not, and as a general rule, this is true, but some
languages don't follow that convention). Learning to program in any
procedural language will help you to transfer your skills to almost any
other procedural language. The steps will be the same, only they syntax
will change.
3) Object Oriented - Python/Ruby/C++/Java/Mono
OO languages are not that much different from procedural ones, and yet,
nothing like them. Mostly the changes are in the techniques used rather
than the actual language changes. But, there are some very fundamental
differences. Security procedures that allow you to hide and protect
code is very different between the languages. For anyone wanting to
discuss how Python is Object Oriented this is where I will kill you. In
a true OO language, code should scope and be internal to the class,
never external. I included Python here not because I believe its a
great OO language (I don't think it is, but it is a fantastic scripting
language), but because the techniques used are very OO based. If you
are not familiar with Object Orientation as a separate subject, I would
suggest learning that. Then using a strong OO language like Java or
Ruby to learn how to implement what you learned. To move from one OO
language to another, as long as you know good proper OO techniques, you
will be better off re-applying your OO knowledge into that other
language rather than try and reapply what you know from your other language.
4) Functional - XQuery
Functional is the new kid on the block. I am still getting tripped by
this one, so maybe somebody else on this list can better explain it. My
experience with it reminded me more of a disected procedural language
with objects to make things easier. But like I said, I get slapped
around by functional programming every time I go near it... I probably
don't know it near well enough to comment on it.
Hope that helps
Kevin Fries
On Wed, Mar 23, 2011 at 9:57 AM, Kevin Fries <
kfries6@gmail.com> wrote:
>> On 03/23/2011 10:03 AM, Taylor, Kaia wrote:
>>
>> I read that you want a win desktop application, as opposed to a device
>> driver, for instance. I am guessing that code efficiency is lower down on
>> the list than coding time. So I see it as a matter of balancing how quickly
>> you want that desktop app written, versus how much ooh and aah you want for
>> jumping right into C/C++.
>>
>> What if you:
>>
>> 1. write your desktop app in visual basic.
>> This may take you>5 times less time to write, based on my own VB vs. C++
>> learning experiences. I know it's something like "minus 2,322 geek cred
>> points" for admitting you wrote something in visual basic. But in exchange,
>> you get your app out and tested and improved and the end product will be
>> better 6 months from now.
>>
>> 2. start learning C/C++ on the side, by working on porting that app. First
>> port the parts of the app which could use optimization.
>>
>> 3. along with learning coding in the next 10 years, keep up on improvements
>> automated code optimizers, emulators, and porting tools. To me, using these
>> tools means that I can get the job done more quickly without necessarily
>> going through the programming learning curve that I'd have needed 10 years
>> ago.
>>
>> I have used this approach on several occasions, but it really depends on
>> what you are trying to accomplish. Different languages have different
>> strengths and weaknesses. I will give you my list of languages, and where I
>> see each being the better choice.
>>
>> C/C++ -
>>
>> This one is the big kahuna ain't it. Its fast, secure, and produces real
>> applications. But its also not portable nor scalable. You write programs
>> in C/C++ for a platform, to do a job. You want a Windows driver, C is your
>> man. You want a Windows desktop application that is more than a trival
>> front end, C++ is your friend. You want these things to still be around in
>> 10 years, yep, C/C++ can't be beat. So what's the cost? Subjective to
>> platform changes (Window/Linux/Mac all generally require code changes unless
>> your program is pretty trivial, and don't even think about taking those
>> programs mobile)
>>
>> HTML/Perl/PHP/DJango/Rails/JSP
>>
>> My favorites in this list are plain old HTML, PHP and Rails. Not every page
>> needs to be dynamic, sometimes it more important to just get the information
>> out. Simplicity can be quite elegant. When you do need more dynamic
>> information (a blog site for example, or a site that customizes its content
>> by the user), PHP can't be beat. But PHP can also be a security nightmare.
>> Also, the level of complexity and features do not scale well in PHP. Yes
>> some people have written some really big stuff in PHP, but they really
>> shouldn't have. To up the ante yet another step, I like (Ruby on) Rails.
>> This has moved out of the fancy webpage and into the application that uses
>> HTTP as its I/O. PHP is still a webpage, Rails is a program. Until Rails
>> 3.0 proves itself, I am still weary of its ability to scale though. For
>> truly enterprise class web sites applications, you can't beat JSP (i.e.
>> Java).
>>
>> Python/Ruby/Perl/VB/Mono/Java/Flex
>>
>> C and C++ is some pretty heavy lifting, and the second category produces
>> great cloud and intranet applications, but where do you go if you need
>> something in between. Something that runs locally not via the web, but is
>> more flexible than C/C++. Every item (except for actual Visual Basic, but
>> is fixed by using Mono) is cross platform. Again, I take a tiered approach
>> to which I like. Python is a procedural language that is masquerading as a
>> object oriented one (for all you python fanboys out there, I am right, and
>> if you don't understand why, maybe you need to have a better understanding
>> of security mechanisms in object orientation). I have some real security
>> concerns about python, due to this trickery. However, it is very handy, and
>> useful language for writing some killer scripts and command line utilities.
>> In this area, Python does a brilliant job at replacing Perl. When I am
>> looking for something that adheres better to object oriented concepts, and
>> has better encapsulation, I move up to Ruby. Python and Ruby also allow you
>> to produce an application that contains multiple faces, such as web and
>> desktop, on Windows, Mac and Linux. Both languages also have decent
>> interactive consoles that allow for realistic RAD development (as opposed to
>> the Waterfall used in Java and C/C++). However, Ruby's better encapsulation
>> allows for much better and more flexible features to be extended later.
>> Plus, nobody does ActiveRecord like Ruby, and everyone should. Databases,
>> x500 directories, file systems, all use a simple and uniform interface, Ruby
>> is really a step up. Both Python (via DJango) and Ruby (via Rails) allows
>> you to reuse your desktop objects in creating web based services. So, a
>> modern day equivalent to the old Client/Server model would have a web server
>> providing a part of your functionality and a independent desktop
>> application. Ruby is the best in the business in this model. Flex can also
>> be looked at here, but Adobe just does not seem to be getting the kind of
>> traction, and really does not do as well as Ruby/Python on the cross
>> platform front (anyone else give up on running the Air version of Pandora
>> Radio... I rest my point)
>>
>> Middleware
>>
>> Databases are old fashion, but a necessity. If you really want to add to
>> your bag of tricks, look into some of the many no-sql databases. I have
>> looked at CouchDB, and liked it, and know many people that swear by it. I
>> personally like MongoDB. Python, C/C++, Ruby, Java, all have object class
>> library that allows MongoDB to blend into your application far more
>> seamlessly than I thin CouchDB does. At work, I deal with another big, big
>> nosql database call MarkLogic. The key to ML is learning xquery and xpath,
>> as well as xml and xslt.
>>
>> Front Ends
>>
>> Lots have tried, none has become dominant. If you are writing for Windows,
>> and are OK with limiting your market that way, the Windows API is well
>> documented and fairly simple to use. Windows and Mac are both able to use
>> the GTK (i.e. Gnome) or QT (i.e. Kde) windowing kits. But both are
>> difficult to deploy on Windows for the average user. Java has its own
>> windowing kit, and nobody, not even Oracle really likes the damn thing. You
>> may want to look into one of the independent 3rd party windowing kits. Most
>> of them are simply a library that needs installed. In the Windows
>> environment, this library can be included with your install. A simple
>> search and you can look at hundreds of these, but I would start with
>> wxWindows, Fox, SDL, and FLTK.
>>
>> I hope that my rundown was not too confusing. I am sure many on this list
>> will agree and disagree with much of what I said. Other will have their
>> opinions, some may rank the products in a different way. So, your mileage
>> may vary.
>>
>> Good Luck
>> Kevin Fries
>>
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