ljust speed test

speedtest

# just speed test for http://stackoverflow.com/questions/11502629/how-to-do-number-to-string-suffix/11502715#11502715



1.9.3p194 :019 > def shot
1.9.3p194 :020?>   a=Time.now
1.9.3p194 :021?>   1000000.times do
1.9.3p194 :022 >       "5".ljust(3, "0")
1.9.3p194 :023?>     end
1.9.3p194 :024?>   b =Time.now
1.9.3p194 :025?>   p (b-a)*1000
1.9.3p194 :026?>   end
 => nil 
1.9.3p194 :027 > shot

=========
473.51715   # winner !
========

 => 473.51715 



1.9.3p194 :028 > def shot
1.9.3p194 :029?>   a=Time.now
1.9.3p194 :030?>   1000000.times do
1.9.3p194 :031 >        ("%03d" % (5.to_s.reverse.to_i)).to_s.reverse
1.9.3p194 :032?>     end
1.9.3p194 :033?>   b = Time.now
1.9.3p194 :034?>   p (b-a) * 1000
1.9.3p194 :035?>   end
 => nil 
1.9.3p194 :036 > shot

==========
1649.558327
==========

 => 1649.558327 



1.9.3p194 :042 > def shot
1.9.3p194 :043?>   a=Time.now
1.9.3p194 :044?>   1000000.times do
1.9.3p194 :045 >       int * 10**([3 - Math.log10(5).to_i - 1, 0].max)
1.9.3p194 :046?>     end
1.9.3p194 :047?>   b = Time.now
1.9.3p194 :048?>   p (b-a) * 1000
1.9.3p194 :049?>   end
 => nil 

===========
1244.009602
===========

 => 1244.009602