From: "Iñaki Baz Castillo" <ibc@...>
Date: 2011-01-13T20:05:39+09:00
Subject: Why {} is much faster than Hash.new ?

Hi, a simple benchmark:

Benchmark.realtime { 1000000.times { @m = Hash.new } }
=> 0.6552023887634277

Benchmark.realtime { 1000000.times { @m = {} } }
=> 0.17668819427490234

I would like to know why {} is so much faster. I can understand that
Hash.initialize method must inspect is an argument is given and so, is
just due to it?

Thanks.


-- 
Iñaki Baz Castillo
<ibc@aliax.net>