Ruby Notes

# remove only leading and trailing whitespace (like PHP's trim) 
str.strip
 
# use a regular expression ( this evaluates to 
str = "white chocolate"
str.gsub("white", "dark")
 
# which are groupings, btw (this evaluates to "1a")
"a1".gsub(/(\w)(\d)/, '\2\1')
 
# puts and print
print "use a return at the end\n"
puts "automatically adds the newline"