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New Message on BDOTNET
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From: spark
Message 2 in Discussion
hi,
nice to see some interest in ruby. yes it is supposed to be rather popularin
japan - the language is rather new and initially it had all its docs in jap so
the rest of the world had some issues appreciating it.
my personal interest comes from the fact it is beautiful as a language. if you
are new to programming probably you should stay away from this.. else take a
dive. it would certainly give our own jscript, vbscript and even perl a run
for its worth.
you can get ruby
here:
http://sourceforge.net/project/showfiles.php?group_id=67007
(approx 8-9 mb i
think)
ruby comes with an
editor - you will find scite.exe in the scite folder.
ruby files are saved
with the .rb extension and to run a ruby prog go to the command line and
type
ruby <filename>
for
example
ruby prog.rb
now if you set
association of the rb extention to ruby.exe (in the bin folder) then you can
simply type the file name at the command prompt to execute the ruby
prog.
pasting from the
ruby help file (programmingruby.chm)
<snip>
This book is a
tutorial and reference for the Ruby programming language. Use Ruby, and you'll
write better code, be more productive, and enjoy programming more.
These are bold claims, but we think that after
reading this book you'll agree with them. And we have the experience to back up
this belief.
As Pragmatic Programmers we've tried many, many
languages in our search for tools to make our lives easier, for tools to help us
do our jobs better. Until now, though, we'd always been frustrated by the
languages we were using.
Our job is to solve problems, not spoonfeed
compilers, so we like dynamic languages that adapt to us, without arbitrary,
rigid rules. We need clarity so we can communicate using our code. We value
conciseness and the ability to express a requirement in code accurately and
efficiently. The less code we write, the less that can go wrong. (And our wrists
and fingers are thankful, too.)
We want to be as productive as possible, so we
want our code to run the first time; time spent in the debugger is time stolen
from the development clock. It also helps if we can try out code as we edit it;
if you have to wait for a 2-hour make cycle, you may as well be using punch
cards and submitting your work for batch compilation.
We want a language that works at a high level
of abstraction. The higher level the language, the less time we spend
translating our requirements into code.
When we discovered Ruby, we realized that we'd
found what we'd been looking for. More than any other language with which we
have worked, Ruby stays out of your way. You can concentrate on solving the
problem at hand, instead of struggling with compiler and language issues. That's
how it can help you become a better programmer: by giving you the chance to
spend your time creating solutions for your users, not for the compiler.
Ruby
Sparkles
Take a true object-oriented language, such as
Smalltalk. Drop the unfamiliar syntax and move to more conventional, file-based
source code. Now add in a good measure of the flexibility and convenience of
languages such as Python and Perl.
You end up with Ruby.
OO aficionados will find much to like in Ruby:
things such as pure object orientation (everything's an object), metaclasses,
closures, iterators, and ubiquitous heterogeneous collections. Smalltalk users
will feel right at home (and C++ and Java users will feel jealous).
</snip>
if you are still
reading :) try these little progs:
(i havent run them
but i guess they should work)
1)
puts "Hello
World"
2)
print "Hello
world"
3)
10.times
{
puts "Hello World"
}
4)
#this will print a
file
filename =
"textfile.txt"
file =
File.new(filename)
file.each_line {
|line|
puts line
}
5)
#the same
prog
File.new("textfile.txt").each_line{|line| puts
line}
6)
#example of a
function call
def sample_function
arg1
puts arg1
return arg1+" World"
end
str =
sample_function "Hello"
puts
str
if you are still
reading this, try and read the ruby book (the chm file) that comes with the
installation and then we will try do something interesting
:)
cheers
rosh
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