From: David Vallner <david@...>
Date: 2006-11-20T02:40:23+09:00
Subject: Re: ruby equivalent PHP function is_numeric?

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Timothy Hunter wrote:
> matt neuburg wrote:
>> Michael Fellinger <m.fellinger@gmail.com> wrote:
>>
>> =20
>>> class String
>>>   def to_numeric
>>>     Integer(self) rescue Float(self) rescue nil
>>>   end
>>> end
>>>    =20
>>
>> Where can I find documentation on the syntax of "rescue" that makes th=
is
>> work?
>>
>> Thx - m.
>>
>>  =20
> Pickaxe 2nd ed. page 374: "Exceptions may be handled...after the
> execution of a single statement."
>=20
It's basically a hack around the fact that as "if", "while", etc. are
available as both block forms and statement modifiers, "rescue" is only
a statement modifier.

There is no "syntax of rescue" that makes this work, as this is in fact
the only syntax of rescue ;)

David Vallner


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