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@daniel-g
Created January 27, 2011 09:35
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Blocks
def fibonacci_up_to(number)
i1, i2 = 1, 1
while i1 <= number
yield i1
i1, i2 = i2, i1+i2
end
end
fibonacci_up_to(40){|fib| puts fib}
def triangle_up_to(number)
i, k = 1, 1
while i <= number
yield i
k += 1
i += k
end
end
triangle_up_to(100){|tr| puts tr}
require "mathn"
Prime.new.each{|p| puts p; break if p > 100}
def word_counter(word)
words_array = word.scan /[\w'^"]+/
words_hash = Hash.new(0)
words_array.each do |word|
words_hash[word] += 1
end
words_hash.each{|word, count| yield word, count}
end
word_counter("a a a a b b b"){|word, counter| puts "The word '#{word}' appears #{counter} times"}
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