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- Note 1: Some links
- Note 2: Installing a c++ compiler. Please send me any additional links and tip you might have about this.
- Ubuntu: the package build-essential will install g++, either find it in Synaptics or type sudo apt-get install build-essential in a terminal.
- Fedora: type su to become root and then yum install gcc will do it, otherwise open Add/Remove Software, search for gcc and select "Various compilers".
- Windows: installing g++ requires that you first install cygwin, a
linux compatibility layer:
look here
for instructions, I have no way to test them, so let me know if they
work or otherwise. There is an alternative set of instructions here.
- Windows: bloodshed.net has a free c++ compiler, Dev-C++ based on g++. This is an IDE, an integrated developer environment, so it will include an editor specially set up to write c++ code, a debugger, a special window to compile the programme and so on.
- Mac: You need to install something called xcode, again I can't test this so let me know.
- Note 3 There are lots of different editors you can use to
write and work on programmes; there are IDEs which are specially
designed for different programming situations, or general editors like
notepad and gedit. The two most powerful editors
are emacs and vi: neither are particularly easy to use
at first because using them efficiently requires that you get the hang
of various abbreviations in vi or key-strokes in emacs, but they are
both allow you to work extremely efficiently when you get used to
them. There is a lot of passionate discussion about which is best,
people who like one don't understand why you would like the
other. This is known as
the Editor War.
Of course, they are both probably equally good and people simply
prefer the one they are used to, however, only idiots prefer vi.
- To edit a file called foo.cpp type emacs
foo.cpp; if that file doesn't exist in the current directory, it
is created. The save a file type ^x ^s, where
the ^ means hold down the control key. To save with a
different name type ^x ^w, to quit type ^x ^f.
- Emacs remembers two points in your file: the point, where
the cursor is, and the mark. A nice explanation is
at emacsworld.blogspot.com. Press ^space,
control space bar, to designate the current point as a mark,
now, ^x ^w cuts between the mark and the point, ^x
M-w copies between the mark and the point,
where M-w means press w while holding down the alt
key. When something is copied or cut it is place in a store called
the kill ring, ^y, called yank, pastes
in the top item from the kill ring, pressing M-y immediately
afterwards will substitute the next item, pressing it again, the item
before that and so on so you can paste anything that has been
previously copied or cut. ^k, called kill deletes from
the point to the end of the line and saves it to the kill ring.
- To split the screen in two windows ^x ^2, got back to
one window using the current window, ^x ^1 when there are
more than one windows ^x ^0 gets rid of the current window. ^x ^o moves between windows.
- You can load a file with ^x ^f, emacs refers to
open files as buffers; ^x ^b changes the buffer being
displayed in the current window; different windows can show different buffers, ^x b opens a new window showing a list of buffers. Note that ^x ^s only saves the buffer in the active window, to save all buffers use ^x s
- ^g cancels a command, useful is you get stuck in the
little window in the bottom that is used for typing commands to emacs,
basically not all commands are associated with key-strokes; less used
commands are typed in directly by first going to the little window at
the bottom using M-x. It can be very confusing to end up
there by accident, but pressing ^g a few times will sort it
out.
- There are lots of emacs tutorials, here is one: uchicago.edu
- Here is a list of short list of commands
- Here is the home page www.gnu.org
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