From: William James <w_a_x_man@...>
Date: 2005-08-13T10:31:12+09:00
Subject: Re: no clue

Faster yet:

iter = 20_000

data = DATA.inject([]){|a,x| a << x.chomp}
times = []

h1={}
times << Time.now

iter.times {
  data.each{ |line| tmp = line.split(/\s*[:,]\s*/)
    (0...tmp.size).step(2){ |i| h1[tmp[i].to_sym]=tmp[i+1] }
  }
}


h2={}
times << Time.now

iter.times {
  data.each{ |line| line.split(/\s*[:,]\s*/).inject(false){|a,b|
    if a then h2[a.to_sym]=b; a=false else a=b end }
  }
}

result_hash = {}
times << Time.now

iter.times {
  data.each{|line| line.scan(/(\w+)\s*:\s*([^, ]*)/) { |k, v|
    result_hash[k.to_sym] = v }
  }
}

times << Time.now

p result_hash == h2 && h2 == h1
(1...times.size).each{|i| p times[i]-times[i-1]}

__END__
some_key: blah, some_other_key: more_blah, yet_other_key: yet_more_blah
key1:value1,key2: value2,key3 :value_3 ,
key4:value4,key555555555:value55555
x_position: 20, y_position: 40, z_position: 30,zz_position:85


Output (on a slower computer):
true
6.82
7.27
8.413