From: Ryan Davis <ryand-ruby@...>
Date: 2011-01-14T06:48:42+09:00
Subject: Re: Why {} is much faster than Hash.new ?


On Jan 13, 2011, at 03:05 , Iņaki Baz Castillo wrote:

> Benchmark.realtime { 1000000.times { @m = Hash.new } }
> => 0.6552023887634277
> 
> Benchmark.realtime { 1000000.times { @m = {} } }
> => 0.17668819427490234

% echo "{}" | parse_tree_show
s(:hash)

% echo "Hash.new" | parse_tree_show
s(:call, s(:const, :Hash), :new, s(:arglist))