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@dahlia
dahlia / lisp.rb
Created September 2, 2010 07:52
30 minutes Lisp in Ruby
# 30 minutes Lisp in Ruby
# Hong Minhee <http://dahlia.kr/>
#
# This Lisp implementation does not provide a s-expression reader.
# Instead, it uses Ruby syntax like following code:
#
# [:def, :factorial,
# [:lambda, [:n],
# [:if, [:"=", :n, 1],
# 1,
@georgeguimaraes
georgeguimaraes / and_begin_idiom.rb
Created September 1, 2010 17:11
And Begin Idiom to avoid if with assignments
# After reading this comment
# http://avdi.org/devblog/2010/08/02/using-and-and-or-in-ruby/#comment-1098 ,
#
# I became aware of a cool idiom for Ruby.
#
# I've seen this in a lot of cases:
if (variable = expression_or_method(options))
variable.calculate_something
do_other_stuff(variable)
In celebration of Whyday: Rubyists always want to show others the beautiful code
they have created, hence the question: Has Anybody Seen My Code?
Has Anybody Seen My Code
(sung to the tune of Has Anybody Seen My Gal)
Clean and small, works for all,
Ruby is my all in all.
Has anybody seen my code?