fb16dfecae
Commit b7f05445c0 has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.
This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.
Approved by: portmgr (tcberner)
16 lines
933 B
Text
16 lines
933 B
Text
This module is meant to be the definitive implementation of iterators, as
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popularized by Mark Jason Dominus's lectures and recent book (Higher Order
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Perl, Morgan Kauffman, 2005).
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An "iterator" is an object, represented as a code block that generates the
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"next value" of a sequence, and generally implemented as a closure. When
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you need a value to operate on, you pull it from the iterator. If it
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depends on other iterators, it pulls values from them when it needs to.
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Iterators can be chained together (see Iterator::Util for functions that
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help you do just that), queuing up work to be done but not actually doing
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it until a value is needed at the front end of the chain. At that time,
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one data value is pulled through the chain.
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Iterator.pm provides a class that simplifies creation and use of these
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iterator objects. Other Iterator:: modules (see "SEE ALSO") provide many
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general-purpose and special-purpose iterator functions.
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