Are GUI Dev Tools More Advanced than CLI Counterparts?
JohnG inputs: "I just got into quite a long argument over on the Yahoo! message boards over the power of command line dev tools. Basically the guy told me that it is impossible to create 'state of the art' programs with command-line tools. But when I asked him to give me reasons why he just called me stupid and 'behind the times'. Considering he was an avid supporter of anything Microsoft, I take what he says with a grain of salt. But what I want to know is how many of you developers have switched from command line work to KDevelop or CodeWarrior? And what advantages you think it offers? Certainly there are many 'state of the art' apps created with command line tools, but I'm open to anything that can increase productivity. I've just never seen a compelling reason to make the switch from what I am used to and comfortable with." Personally, I feel the best development environment to work in would be one that ignores neither the GUI, or the command line.
Window's answer to crond is every program that needs to schedule something includes its own task bar scheduler that eats 5 megs of ram. And you'll notice those programs execute command lines as well (ie. nav /scanall), because a command line interface is the *ONLY* conveniant way for one program to manipulate another.
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For what I do, which is production of front ends onto databases, GUI is invaluable.
Being able to drag and drop items onto a form, set a few properties, add in a few bits and pieces of code for unusual circumstances and validation, and just run it, is great.
For device drivers and command line programs, it may not be nearly as useful.
Of course, I find some facilities (like syntax highlighting, procedure finding, and multiple debugging windows) absolutely essential too, and would probably miss those if I didn't have a decent IDE.
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GUI's are easier to learn because all the options are laid out in front of you. You can click through menus and scroll bars and see all the options available. This makes it very easy to learn. Eventually though you will know all the capabilities of your editor, but you will still have to click and move through menus and graphics to get to what you want.
:help and start searching for something simliar to what you want to do. But once you know the basic commands, it becomes easy to find other commands for something you want to do.
CLI tools are the opposite. They are hard to learn, but once you know them, they are fast and efficient. Vim is a perfect example of this. The editor is simply amazing. It has a keyboard interface to do nearly anything you want to do. The only problem is, it's very very difficult to learn. You don't know what all your options are. You have to goto
Here's a nice cryptic example. What's a fast way to find the include file for a function? Browsing through help files, searching for the command and cutting and pasting the include in? Or this:
:r! man ntohl | grep "\#include"
Ya, I thought so too. =)
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There are times when CLI tools are superiour And there are times when GUI's
are superiour. If you don't know when each is best used, and how, you are
not up to your full potential as a programmer.
Personally, I believe in keeping an open mind, and using the best tool
for the job. This allows me to do the best job possible.
Now then, ask your bigoted friend if he does anything less. If this doesn't
shut him/her up, then his reply will be most amusing.
The difference between GUI development tools and command line development tools is fairly minor. In many cases, the IDE (Integrated Development Environment) simply brings together a large collection of individual utilities for convenience. This happens in the Windows world with Borland's C++ compiler and their IDE. In the *nix world gcc (and other compilers), as well as debuggers, possibly code-completion (usually only found within the IDE), class browsers, etc, are brought together into one package that allow for faster development of applications.
KDevelop and KDE Studio are two examples of this. The "tools" are really the same - they just offer a GUI interface to several command line utilities. I cannot speak for KDE Studio, but I believe KDevelop is working on good cvs support for a complete approach to shared development. To my knowledge some of these features are already implemented. Also, a GUI based IDE will almost ceretainly have good syntax highlighting.
However, one does not need to use a GUI to get colored code - vim and Emacs/XEmacs offer this from the command line.
In my opinion, development can take place faster and debugging more easily with an integrated environment compared to ed+gcc, but this should be rather obvious. This does not make IDE's (both GUI and terminal based ones - IMO Emacs is an IDE once you configure it properly) more advanced - just more convenient.
The nice part about developing with *nix is that you can use a wide variety of tools, even on the same project. Use what you are comfortable with, and ignore those who say your technique is flawed - everybody has their own way of doing things efficiently. With MS Visual C++, you are basically stuck with their IDE and you better like it.
Choice is good, use what you like.
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Amen. Many of the modern development environments are just wrappers. Although there are IDEs out there-- Metrowerks, for instance-- that don't rely on this crutch, even those environments rarely have significant added functionality vs. CLI tools (though the fully integrated tools at least seem more carefully put together than the wrappers like MSVC++). One of the worst things about these wrapper tools is that the GUI generally lacks a complete interface for controlling the really esoteric options; MSVC++ just punts the problem and forces you to enter them into a text box. Big improvement over CLI there.
While it's possible that GUI tools are potentially capable of doing more than CLI tools, none of the tools in common usage today really make this case. I admit that it may be easier to learn to manage a project using a visual tool, but that's not what this debate is about. I'll wager that somebody with good CLI experience can do everything an equally experienced GUI-tool user can do, in the same amount of time. They might even find that they have more flexibility at their fingertips.
Now, when it comes to interface design, GUI tools can be very helpful. But in most "IDE"s, even the UI design features tend to be poorly integrated. Often they're implemented in clumsy, inflexible ways that make them little more useful than their standalone counterparts. And the fact that so many people use the IDE seriously handicaps the development of better tools by third parties.
In the work I do, less than half of the GUI windows I develop are simple fixed input forms where all the elements are known beforehand. A RAD tool is fine if your window is a simple dialog box with nothing but fixed elements, but as soon as you need a dynamically laid out window you're sunk. Even something as simple as an input form with a variable number of rows of data is beyond all the RAD tools I've found (unless you use an ugly-looking table widget which in most cases means that the end product looks amateurish) -- and if you're talking about something like having a database schema driving the layout of your input forms, you can forget about RAD tools completely. As soon as you need this type of dynamic layout, the RAD tools become your enemy rather than your friend -- and the last thing I want to do is fight the development tools I use, or have to add contortions to my source code just so that the RAD tools will accept them.
But the lack of support for dynamic layouts isn't the main reason I avoid RAD tools -- the fact is, almost all RAD tools I've seen rely on absolutely x,y coordinate placement (and sizing) for each widget. This is a terrible way to lay out your windows, because as soon as your program runs on a different platform, or even on a machine with, for example, a different set of installed fonts, or a different video resolution, suddenly all your nice-looking GUIs turns to custard. At best, your GUI windows look cramped or have widgets that don't line up -- at worst, your widgets overlap or are cropped. Talk about amateurish-looking GUIs! And if your GUI looks messy, your users will assume the code lying behind the GUI is a mess as well -- which is why I'm so fanatical about creating professional-looking GUIs.
Anyway, that's why I've abandoned RAD tools, and hand-code everything. Sure, it sometimes takes a little longer to create a simple dialog box, but I more than make up for that by saving time when creating dynamic layouts and not having to redo everything when I want to run my app on a different machine or platform...
Mind you, it has been years since I've looked at RAD tools -- it may be that some of them now do support dynamic layouts better, and maybe even use logical positioning (eg, sizers and other layout tools) rather than rely on absolute positioning and sizing. If there was such a tool (preferably for wxPython, which is what I'm coding in now), I'd love to hear about it!
- Erik.