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September 29, 2003

データ構造のコピー

perl で(perlに限らないが),複雑なデータ構造を使用する場合,浅いコピー(shallow copy)がよく問題になる.
これを解決してくれるのが,↓のモジュール
 ・Storable
 ・Clone
どちらも,深いコピーを実現する.

ただし,どちらも XS 入り.
Storable
はperl5.8 なら標準で入ってるっぽい.

幸いなことに,Clone のクローンとして Clone::PP というのがあり,こちらは pure perl で書かれているようだ.たぶん,PP は pure perl の略だろう.

ほかに,Util というモジュールにも clone() サブルーチンがある.

投稿者 msano : September 29, 2003 08:56 PM

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