Dave Verwer
Ruby had the first beta in 1995
Iron Ruby is branched from 1.8.x branch of ruby modulo
DLR is just a layer on top of the CLR, still compules to IL
IronRuby is a blind implementation for clean IP
ruby bridge by john lam was an early use of the CLR in Ruby
the DLR came out of IronPython work
IronRuby has two developers working on it at microsoft
rubyforge subversion repository is
a mirror of the internal microsoft codebase
you can run regular ruby code in IronRuby
Optional Punctuation
semi colons, returns, braces, etc.
you can determine which puntuation you need to make your code readable
immutable string declarations are done like :init which is the string "init"
immutable strings are never disposed
Syntactic sugar
Optional Punctuation makes Domain Specific Languages more forgiving for syntax
and easier to write
Sigils prefixing variable names to add description
Sigils include local, $global, @instance, @@class, Constant
sigils determine scope and are optional
ruby strongly typed but can redeclare vars
shorthand Range.new(1,100) 0..100
%w(words in an array) will create an array that is seperated by spaces
using an immutable string as a hashtable key can cause collisions
puts var unless x.nil? this will handle null cases
strings can be single or double quotes and nest the other type without using escape
characters (when its mixed you need them though)
theres no character type natively but you can use the .Net Char type
big numbers can be assigned dynamically you don't need to worry about exceeding the
maximum value
no native decimal type support but you can use the .net decimal type
can alias methods on a class level so you don't have to program in american
blocks in ruby are lambda methods,anonymous delegates in c# and closures in js
core language contruct - heavy use of delegates
there are no for loops you just use the times block
a for loop
10.times do {print "Hello"} this print Hello 10 times
a foreach loop
["a","b"].each do |letter|
puts letter
end
file.each_line do |line|
line =~ /regex/
end
a try catch
begin
...
ensure
...
end
yield keyword exists like c#
=== is the match operator and compares as well as it can
mixed matching in case statements
case i
when MyClass
...
when 1..100
...
when /^[a-z]*$/
...
end
Mixins
like c# extension methods
String.module_eval do
you can redefine a class to override or add a mixin
class String
def capitalize_all
...
end
end
class String
undef length
end
Linguistics
library in ruby (blew my mind, not hard to do just nice to have done for you already)
individually extend instances of objects
in.extend(JPEGMethods)
class ReverseString
def method_missing(method_name)
...
end
end
method_missing is used to do dynamic querying of database based on what the current
class is and that its trying to do a find
customer.find_by_email_or_name
this makes intellisense a hard problem
naming is underscore seperated and lowercase
name mangling allows the CLR namespaces to be available with Ruby naming conventions
Thanks Dave
