Problem:
I had to append around ~100-200K small strings (avg. length 7) to form a single large string . I had used + operator and it was very slow.
To find a faster alternative I did following benchmarking experiment:
Solution:
def bm_concat limit
str = ""
limit.times do
str.concat("abcdefg")
end
end
def bm_plus limit
str = ""
limit.times do
str += "abcdefg"
end
end
def diff t1, t2
puts (t2-t1)
end
limit = ARGV[0]
which = ARGV[1]
puts "LIMIT: #{limit} , WHICH: #{which}"
if which == "plus"
t = Time.now
bm_plus limit.to_i
t2 = Time.now
else
t = Time.now
bm_concat limit.to_i
t2 = Time.now
end
diff(t,t2)
