From: Guest <chen_li3@...>
Date: 2007-07-06T07:36:36+09:00
Subject: how to convert string into number

Hi all,

I read several rows of numbers and split each row into an array. I get
an array of array. By default Ruby treat each number as a string. I want
to convert each string into a number. The only way I can think of is to
loop through the old array of array, change each element in each row
using #to_f and put them back into a new array.  It is not efficient.
What other options might be better?

Thanks,

Li

# file format

1 100 33 32
2 500 33 20

....

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