From: Aleksei Guzev <aleksei.guzev@...>
Date: 2002-11-18T22:28:47+09:00
Subject: Re: ruby-dev summary 18711-18810


"Yukihiro Matsumoto" <matz@ruby-lang.org> wrote in message
news:1037624440.355792.19569.nullmailer@picachu.netlab.jp...
> H,
>
> In message "Re: ruby-dev summary 18711-18810"
>     on 02/11/18, "Aleksei Guzev" <aleksei.guzev@bigfoot.com> writes:
>
> |> [ruby-dev:18651] Enumerable#zip (contd.)
> |
> |Aplying zip as an instance method to the module Enumerable makes the
method
> |assymetric. There is the object left to the method name, and its
parameters.
> |But in mind the operation is symmetrical except the order is significant.
> |Where should the object be placed in sequence?
>
> |If the longest sequence would be chosen, what value should receive the
> |absent items?
>
> nil

But this will raise TypeError in the case of incompatible type/length of the
sequences. This would hide the error and violate  "...* (on zip) We should
not raise exceptions when the length of the components are differ..."


>
> |While the exception will not be raised how can one know if the sequences
> |have different lengths?
>
> By explicit check, if you really want to know.
>
> matz.
>
>