ruby-dev

まつもと ゆきひろです

In message "[ruby-dev:2898] Re: [BUG] IO#eof? when Thread using"
    on 98/06/17, 石塚圭樹 <keiju@Rational.Com> writes:

|けいじゅ＠日本ラショナルソフトウェアです.

|>|> (a) readはEOFで例外を発生させるべきか(仕様変更)

これはgetsに合わす(nilを返す)で合意できたみたいですね．

|>|> (d) 指定したサイズが読めなかった場合例外を発生するread相当
|>|>     のメソッドは(組込みメソッドとして)必要か
|
|>利用価値があるのはもう分かってるんです．問題はそれがどのくら
|>いあるのかということですよね．
|
|そうですね... readを使う場面では, ほとんどの場合こちらを使うでしょう.
|というのは?

うーん，石塚さんはそうでしょうけど…．

|>|> (e) dがyesの場合のメソッド名

|>どれもピンときませんねえ．もし採用するんならreadbytesっての
|>は良いかも．
|
|readchars, readstringよりは良いですね.
|
|  readfix
|  readfixbytes
|
|あたりはどうでしょう? 固定サイズだけ読み込むことが強調されてます.

fix->fixedでしょうね．readbytesかreadfixedbytesってところで
しょうか．後者は長いな．

|>2はどうしましょうか．また，その場合読み捨てられる文字列はど
|>うしましょうか．
|
|私としてはこの場合を例外にして欲しいです. で, ほとんどの場合その文字列
|読んでも意味はないですが, なくなると困る場合もあるかもしれないので, 例
|外のメンバとして返してもらえると嬉しいのですが.

まあ，気持ちは分かります．が，そうなると石塚さん自身も指摘し
ておられるように

|でも, EOFErrorって通常メンバ持たないですし, 他のエラーEPIPEなども当然
|持ちませんから変かもしれないですね. 

という印象があります．それに

|あとは,
|
|  class ReadError < StandardError
|    attr detail    # EOFならEOFError, それ以外はそれなりの例外
|    attr rest      # 最後に読み込んだ文字列
|  end
|
|みたいなかんじの例外を用意するのもありますが...

というのに対しても

|# ここまで来ると, 組み込みにするのは気が引けるかな...

と同様の印象があります．というわけで必要に応じてrubyで書くと
いう(標準添付でもよし)のを提案したいのですが…．

                                まつもと ゆきひろ /:|)

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[ruby-dev:2905] Re: [BUG] IO#eof? when Thread using

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[#2951] RE: diff for ruby-1.1b9_25 (mswin32) — 助田　雅紀 <masaki.suketa@...>

[#2966] Re: experimental release 1.1b9_27 — 助田　雅紀 <masaki.suketa@...>

[#3072] RE: experimental release 1.1b9_28 — 助田　雅紀 <masaki.suketa@...>

[#3073] opendir of mswin32-ruby — 助田　雅紀 <masaki.suketa@...>

[#3075] Re: opendir of mswin32-ruby — 助田　雅紀 <masaki.suketa@...>

[#3078] Re: opendir of mswin32-ruby — 助田　雅紀 <masaki.suketa@...>

[#3080] Re: opendir of mswin32-ruby — 助田　雅紀 <masaki.suketa@...>

[#3081] Re: opendir of mswin32-ruby — 助田　雅紀 <masaki.suketa@...>

[#3097] bignum of ruby11b9_28 — 助田　雅紀 <masaki.suketa@...>

[#3100] Re: bignum of ruby11b9_28 — 助田　雅紀 <masaki.suketa@...>

[#3103] Re: bignum of ruby11b9_28 — 助田　雅紀 <masaki.suketa@...>

[#3110] Re: bignum of ruby11b9_28 — 助田　雅紀 <masaki.suketa@...>

[#3115] Re: bignum of ruby11b9_28 — 助田　雅紀 <masaki.suketa@...>

[#3118] Re: bignum of ruby11b9_28 — 助田　雅紀 <masaki.suketa@...>

[#3121] Re: bignum of ruby11b9_28 — 助田　雅紀 <masaki.suketa@...>

[#3125] thread and STDIN.gets — 助田　雅紀 <masaki.suketa@...>

[#3149] Re: bignum of ruby11b9_28 — 助田　雅紀 <masaki.suketa@...>