From: "Luca (Email)" <luca.pagano@...>
Date: 2011-12-29T15:56:41+09:00
Subject: I: important qution on ruby

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Da: Intransition [mailto:transfire@gmail.com]=20
Inviato: venerd=EC 11 novembre 2011 07:15
A: ruby-talk ML; ruby-talk-google@googlegroups.com
Cc: ruby-talk ML; ruby-talk@ruby-lang.org
Oggetto: Re: important qution on ruby
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Break the problem down. What is given? First a file. So you need to =
"read"
the "File". Look up `File.read` and read about that.

Okay if you have done that, let's say you have read the file into a =
variable
called `text`.

Now you need to extract information from that text. How will you do =
this?
There a basically two ways: by position or by pattern. So you need to =
figure
out what about the file is always the same no matter which students =
record
it is and use that as a guide to locate the other information.

For example the number appears like so:
    *Number :*     20085252

You could get this information by matching against the *Number :* part =
so as
to find the rest. So something like

      match =3D /\*Number\s*:\*(\d+)/.match(text)

The characters in between the /.../ are a Regular Expression. Look that =
up
and read about them. Notice we had to use `\` in some places to "escape"
characters or to indicate a special type of character, e.g. \d means any
digit.

Because of the (\d+) we have capture the digits in the first match =
element,
so:
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      number =3D match[1]

Now you should be able to read up on the things I suggested and work out =
how
to do it for the rest of the information.

And have fun. It's a like a puzzle, not a chore.

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