class String
def acronym(thresh=0)
acro=""
str=self.dup.strip
while !str.nil? && !str.empty?
word = str.shift_word
if word.length >= thresh
acro += word.strip[0,1].to_s.upcase
end
end
acro
end
@@first_word_re = /^(\w+\W*)/
def shift_word
return nil if self.empty?
self=~@@first_word_re
newself= $' || "" # $' is POSTMATCH
self.replace(newself) unless $'.nil?
$1
end
end
s1 = "this is a test"
puts s1.acronym