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This semester, I'm learning database using the isql*plus (oracle10g), but that needs to install a server on the pc first so it will function well. That really lags my pc, and I just need to write simple code snippets, and view the output.
I've searched the internet for the isql*plus, found something called (altova database), but needs money.
Searched again for a C compiler, but found an old compiler (that's fine by me!) and found the dll libraries for the openGL, but don't know how to bind the library with that lousy compiler program I'm using; maybe a C compiler suitable for game programming is the best.
And I've been starving to find a C programming language compiler (World Widely Known), with the suitable OpenGL dll libraries.
If you have to have Oracle, then check with your school to see if they've got a test Oracle server setup for students to use. If not, then get together with some friends in the same class and dedicate one machine to be your shared Oracle server. Alternately, just spin up the Oracle instance on your local box when you need it, and spin it back down when you don't.
If you are just learning SQL, then try something lighter like MySQL or SQLite. Both are free and much less resource intensive than Oracle. From a student perspective, the SQL language is similar enough. When you get into big applications and database administration, the differences between the different flavors of SQL servers becomes more important.
GCC is your go-to C/C++ compiler. Whether there is OpenGL support for it depends on the platform you are using. I can't tell if Visual Studio is free for students or not, but there is a 90-day free trial. That should be more than sufficient for a semester's worth of coding.
This semester, I'm learning database using the isql*plus (oracle10g),
but that needs to install a server on the pc first so it will function
well.
Every version of Oracle you install locally will need to install a server to function at all, not just to function well.
And I've been starving to find a C programming language compiler
(World Widely Known), with the suitable OpenGL dll libraries.
iSQLPlus is a web-based utility that you can use to a) connect to a server, not necessarily running on your local PC, and b) enter SQL statements to be run on that server. It's not a compiler in any sense of the word. Whether you can connect to an instance of Oracle running on a different computer depends on a lot of TCP/IP and database security settings.
As a rule of thumb, it's pretty odd to need a C compiler when your goal is learning any SQL database, including Oracle.
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Closed 9 years ago.
I recently came across John Levine's book "Linkers and Loaders." This book was written in the year 2000. If anyone has read his book, is everything the author says still relevant for Objective-C in the year 2013? I am asking, because it looks like a good book to have on my shelf, but if the info is out of date I probably don't want to really study the book.
Thanks!
Yes & no...
I don't know that specific book, but if it was up-to-date in 2000 then the material in it should still be valid to learn about how things work under the hood.
However, you do not really need to know anything about linking and loading to understand variables and pointers.
Nor do you need to understand symbol tables as such. A symbol table is a data structure used by compilers to track variables during compilation as part of translating the program code your write into the instructions the CPU understands.
The concepts of variables and pointers in programming languages are abstractions of the concepts of memory locations and memory addresses at the CPU level (which themselves are in some sense abstractions of lower-level stuff, ending up with circuits and, if you dig deep enough, electrons! ;-))
What you should be looking for is a book on programming language concepts rather then compiling, linking and loading. A good book will introduce variables and types, then composites such as arrays and records, and end up with objects (which are essentially just variables you'll discover). Types and variables go together, one says how to interpret a collection of bits the other provides somewhere to keep collections of bits. A pointer is a value (collection of bits) of some pointer type, just as an integer is a value of some integer type.
Variables and pointers are not difficult concepts, but they are often misunderstood - plenty of questions on SO stem from misunderstandings of these concepts - so your quest is good, go and read! Apologies, but I've no reference to hand.
Given that ObjC has been in active use as a natively compiled language since the late '80s (prior, it was largely a precompiler generated language + runtime) and has supported linking/loading since then, too, it'll be as applicable as the book can be to any language derived from C. With that said, it is likely largely a waste of your time to dive too deep in that linking/loading are details that are taken care of by the system with little [OS X, OpenStep] to no [iOS] configurability to the developer.
Certainly, an interesting divergence, though, and a deep understanding of linking/loading is relevant to any work related to compilation and execution tool chains.
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Closed 10 years ago.
I have studied VB 6.0 but have hardly any knowledge of .NET. Can someone please tell me the difference between the three versions namely VB6.0, VB 2010 express and VB.NET?
Now this is a somewhat wide question, but in short, VB.NET is the language and VB 2010 is a VB.NET version released with Visual Studio 2010 and .NET 4.
So the main comparison should really be between VB6 and VB.NET because that's where you'll find the big differences.
VB.NET includes a lot of functionality that has been around in other languages like C++ for ages, and is by some considered way to different from VB6 even to be called VB anymore. But let's set aside the arguing for a moment, what are those new shining thingies? Well, among other you have this:
True object oriented inheritance
Overloading
Free Threading
Strict type checking
and alot more. Then there are some changes that might be a bit harder to adjust to since they're to close to the old one, like zero-based arrays, returning values from functions using a
return statement instead of using the function name, passing of parameters by value instead of by reference, new error handling (using try, catch, finally etc), usage of namespaces etc. The list goes on and on.
The shear breadth of the .NET Framework which VB.NET makes use of makes it a more versatile platform (IMO). It also runs in the CLR (Common Language Runtime) which is more or less a virtual machine with a just-in-time compilation engine.
When it comes to compiling, VB6 compiled to native code while VB.NET compiles to CIL (Common Intermediate Language) which makes it a lot easier to reverse engineer, however you can obfuscate the code in order to make it less readable.
As you can see from what I just wrote it's quite a wide subject, but if you have a more precise question, feel free to ask, otherwise I hope you have a bit clearer image of the differences now. :)
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I have recently heard about Magic programming language from several sources and didn't recall ever hearing about it before. It was mentioned that it is a programming language from Israel.
I did some googling and couldn't find much information about it. I couldn't find any code examples, and wikipedia didn't have any information on it either.
I think this is the site for it http://www.magicsoftware.com/en/products/?catID=70 though I am not sure, as it mentions uniPaaS instead of magic. However other material on the site indicates that this is the new name for it.
I was interested in learning more about it from it's practitioners, rather than the company. I saw several claims on the internet that it provided really fast application development, similar to claims made by RoR proponents when it came out.
How does it compare to VB?
Is it still a better RAD tool than current .net or mvc frameworks like django, ror ...etc?
How hard is it to learn?
If you can post some sample code it would be most helpful as well.
Could this site be it? Though it links back to the page above.
You're right my friend, Magic is the original name of the "programming language", nowadays is called UniPaaS (Uni Platform as a Service), I use it to develop some business application. Maybe is the fastest way to create an applications(data manipulation), you can create apps in just a few days, but like everything in life has its own drawbacks:
it's very weird so that makes it
difficult to learn.
you do not have all the control of what's happening in the background
and you have to pay a lot for licensing (servers,clients, etc)
If you are interested in learning this, you can download a "free" version of the software that only works with sqlite databases called UniPaaS Jet.
Magic Language is as it’s called today uniPaaS, it used to be Magic than eDeveloper and now uniPaaS as PachinSV menchend before.
uniPaaS is an application platform enabling enterprises, independent software vendors (ISVs) and system integrators (SIs) to more successfully build and deploy business applications.
You can download the free version of uniPaaS Jet here: http://web.magicsoftware.com/unipaas-jet-download,
try it yourself and see how easy it is to use.
Magic technology as you descried is a Magic Software Enterprises tool (uniPaaS), you can find more information on:
official website: www.magicsoftware.com/en/products/?catID=70&pageID=55
uniPaaS Jet developer group on facebook: https://www.facebook.com/groups/unipaasJet/
Magic developer zone: devnet.magicsoftware.com/en/unipaas
Let me know if you find the information helpful
Bob
As PachinSV explained, there is a RAD once called Magic, then eDeveloper, now UniPaaS. This RAD is dedicated for database applications. Programming in this RAD does not look like anything else I know, you mostly don't write code as with usual languages, but it is nearly impossible to explain just with words. The applications are interpreted, not compiled.
As PachinSV said, when developing, you must follow UniPaaS' way of doing things. This is probably why so many people never manage to use Magic properly: if you thought like Magic before learning about it, then you will adapt to it easily; but if you have a long and successful experience using other database development tools, then often the Magic paradigm will never become natural to you. The learning curve is quite steep, you must learn a lot of things before being able to write a little application.
Previous versions stored the "code" inside a database table. The last version, UniPaas stores the code in xml files. I could send you an example, if PachinSV does not answer you before. But the files are pretty big: the smallest xml file I have in a test app is 4000 bytes, and any application is made of at least 11 files, an empty application is 7600 bytes. You must also understand that developers never use those files (they are undocumented AFAIK), they are only the storage format used internally by UniPaaS. The only way to use them is to set them up as a UniPaaS application.
I'm still an active MAGIC Developer... This is the old name used and its a completely different paradigm like some of you mentioned. I've been developing it from Magic version 8.x to eDeveloper 9.x to 10.x then renamed to UniPAAS.
The newer version is much easier to use and it is still very RAD in the sense that there is little or no code you write... a lot of the common programming tasks like IO, SQL command...etc is handled by the tool and is transparent ( so even less code to write since we use it in almost all types of applications)... Its mostly an Enterprise tool... you wouldnt use it for small application...
You can download the free version to learn the paradigm... but the enterprise licenses are expensive.. you need both the development tool and the runtime license if you want to deploy... so it can be costly for small scale projects...
I enjoy it personally, especially when you have to do quick proof of concepts or a quick data migration or porting onto any db platform and bridging any existing system through a wide range of gateways they provide with the licensed version.. It is up to date with the commonly used web technology out there...like SOAP, RIA ...
It's more popular in Europe... The HQ in the States is in Irvine... we used to have 2 branches in Canada but it closed down in 2001 .... Visit the Magic User Group on Yahoo... Its a very active forum with lots of cool people who will help you out in your quest...
http://tech.groups.yahoo.com/group/magicu-l/
I Programmed with Magic for 6 years and found it to be a amazingly fast tool, easy to understand if you are a competent database programmmer because all operations are really about data manipulation. It is certainly a niche area develop in and because of this jobs are few and far between. As it is interpreted there are really no bugs to make. It will work with many databases/connections simultaneously but there is a big memory and processing hit.
Drawbacks :
Little control over communications between machines and devices
No mobile API as yet
Niche area so few skilled practitioners or companies willing to invest.
Good Points :
You can say you are a Magician; you can impress people with uber fast apps development (really)
It is easy to understand if you don't have a PHD in Maths
zero programming "bugs" can creep in. What you do is what you get.
Developed in The original Magic PC referred to by several of the above folks.
It is exactly this: FAST, FAST, but expensive and rigid in what it will allow you to do. It works on a tick tack toe like matrix. Dropping in commands into the various sections determines when they are run. The middle column is run indefinitely until you break the cycle. It is like a do Until loop. If you have to do an item once you put it into this infinite loop and end it after one cycle.
The first column procedures are run first, ONCE, before the infinite middle column is run. The 3rd column of commands is run after the infinite cycle, once. It is very efficient and logical once you get over the idea of an infinite loop.
Types can be specified and an associated program to present the type. Then everywhere the type is used all the settings automatically kick in. I like especially that one can write the program and 5 months later change the name of a variable and it is carried throughout the program. In fact the program does not use your name for anything. The internal name of any and all variables is hidden to the end user, so of course it is not a problem to change a name. It takes a minute to write an input program for any table. It takes a minute to write an export/import program for all the data files in the database.
Attaching to a type of database like Btrieve or SQL independent of the program itself.
I stopped using the language because they demand more for the runtime engine than I could charge for the programs I wished to run with it. Bill Gates went the opposite direction. VB is superior in control and being able to drop `10 datagridviews onto the same screen, but development is 10 times slower.
It's niche then is PROOF of concept for a program in a big company or conversion, importing, exporting for a development company. It is good for $25k programs that are database heavy and not going mobile.
uniPaaS, Magic PC
I did some Magic work around 1993. It was a DOS based 4GL that came from Israel. Haven't seen it since.
How does it compare to VB?
It doesn't.
Is it still a better RAD tool than current .net or mvc frameworks like django, ror ...etc?
If you mean "is it more Rapid", then yes, otherwise no.
How hard is it to learn?
About as hard as learning MS Access.
Coincidentally, if you want to get an idea of what it is and how it works, I've found that comparing it to MS Access is handy. It works in much the same way from a user's or developer's perspective. Obviously what happens in the background is vastly different, but if you've ever developed a form in design view in Access, Magic will seem very familiar.
Google tells me there's also MAGIC/L. All I could find about it was this blurb:
A procedural language written in
Forth. Originally ran on Z80's under
CP/M and later available for IBM-PCs
and Sun 3s.
The only Magic programming language that I know about is one used by a company called Meditech. It's a proprietary language derived from MUMPS.
The language is truly miserable - here's a sample.
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Closed 10 years ago.
i'm just curious. so i ask this particular question about SQLite. I haven't use this type of database extensively. but care to explain what is the basic different between SQLite and Mysql ?
The reason behind all of this is i just want to know whether it possible to use it to store wordpress data and act as a database ?
SQLite is a file database. There is no running process or anything, it's literally just a regular file on your disk. MySQL is a full fledged database server, something that has to be run independently. SQLite is best suited for when applications need a small database to store settings or data.
You could do it with SQLite, but SQLite isn't really meant to be used concurrently (ie, by multiple users accessing it at once). So unless it's some dinky internal site that will only be accessed by a couple people, I wouldn't recommend it.
Currently, the only database supported by WordPress Version 2.9 is MySQL version 4.1.2 or greater.
Technically, you can use WordPress with SQLite. If you don’t have much traffic it is an option.
SQLite is an in-process or desktop class database. MySQL is a server class database. I'm a little notorious here for promoting server-class engines over desktop or in-process -class engines for web sites, because no matter how well you do at your in-process database engine you are going to have concurrency problems when a whole bunch of people try to access your site at the same time.
However, I think in this case you might do just fine with SQLite, as long as you are very careful about what plug-ins you install. The reason is that you're likely only going to have one person updating your wordpress blog, and probably in-frequently at that. So as long as you're careful about using plug-ins that don't get to write to the database for every visitor, sqlite should do fine.
It's trivially easy to install a copy of MySQL and a webserver onto any machine, so while you could use SQLite, it would be a lot more difficult than simply grabbing a copy of MySql and installing it.
WordPress does not support anything but MySQL out-of-the-box, but it is possible for a database-plugin to replace that support with just about anything, if it really wanted to.
If you want to test this locally or something, just grab a copy of XAMPP and install WordPress on that. Easy.
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Has anyone here given the Fantom programming language a whirl? (pun intended).
My first impression:
I like the ability to have the code run on either the .NET or Java VM.
The syntax is nice and clean and does not try anything fancy.
I have a belief that "the library is the language" and the developers of Fan believe that their USP is their APIs:
But getting a language to run on both Java and .NET is the easy part - in fact there are many solutions to this problem. The hard part is getting portable APIs. Fan provides a set of APIs which abstract away the Java and .NET APIs. We actually consider this one of Fan's primary benefits, because it gives us a chance to develop a suite of system APIs that are elegant and easy to use compared to the Java and .NET counter parts.
Any other thoughts, first impressions, pros and cons?
It looks very inspired by Ruby. It says that it's RESTful but I don't see how exactly. Compare with boo, which is more mature yet similar in many ways (its syntax is Python inspired, though).
The design decisions to keep generics and namespaces very limited are questionable.
I think their explanation sums it up:
"The primary reason we created Fan is
to write software that can seamlessly
run on both the Java VM and the .NET
CLR. The reality is that many software
organizations are committed to one or
the other of these platforms."
It doesn't look better than all other non-JVM/.NET languages. In the absence of any information about them (their blog is just an error page), I see no reason why they would necessarily get this righter than others. Every language starts out fairly elegant for the set of things it was designed for (though I see some awkwardness in the little Fan code I looked at just now) -- the real question is how well it scales to completely new things, and we simply don't know that yet.
But if your organization has a rule that "everything must run on our VM", then it may be an acceptable compromise for you.
You're giving up an awful lot just for VM independence. For example, yours is the first Fan question here on SO -- a couple orders of magnitude fewer than Lisp.
For what problem is Fan the best solution? Python and Ruby can already run on both VMs (or neither), have big communities and big libraries, and seem to be about the same level of abstraction, but are far more mature.
I have never heard of Fan until a couple of weeks ago. From the web site, it is about one year old so still pretty young and unproven. There are a couple of interesting points however: First the language is tackling the problem of concurrency by providing an actor model (similar to erlang) and by supporting immutable objects. Second, the object follows the example of Scala with type inference. Type inference allows the programmer to omit type declarations but have it computed by the compiler providing the advantage of short and cleaner code as in a dynamically type language while preserving the efficiency of a statically type language. And last, it seems like a very fast language, nearly as fast as Java and really close or beating the second fastest language on the JM: scala. Benchmark showing the performance can be found at http://www.slideshare.net/michael.galpin/performance-comparisons-of-dynamic-languages-on-the-java-virtual-machine?type=powerpoint.
This is very interesting.
Java (or C#) was created in order to eliminate Platform dependency by creating a JVM (or CLR) that will compile the code into a specific machine code at run time.
Now , There is a languege which is Virtual Machine independent? umm .... what the hell?!?!
Again , this is a very interesting topic , That might be the future...:) going to one universal single languege
I think it looks like a great language feature-wise, but I'm not sure how useful it is. I don't think it is all that useful to target .NET and JVM. Java is already cross-platform, and .NET is too, with Mono. By targeting two VMs, you have to use only the APIs that are available on both. You can't use any of the great native APIs that are available for Java and .NET. I can't imagine that their API is anywhere near as complete as either Java's of .NET's.