有关此表达式的参考信息，请参阅 WebSphere Integration Developer V6.1 的 Replacement expressions in descriptions and staff assignments。

Please refer to Replacement expressions in descriptions and staff assignments for WebSphere Integration Developer Version 6.1 for reference information on this expression.

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对于初学者的一个最好的建议就是：首先学习最基本的正则表达式(参阅资料部分，或“ perldoc perlre ”参考手册)，稍后才进一步学习那些复杂的高级特性。

The best advice for the beginner is: learn the basics of regular expressions (see Resources or the "perldoc perlre" manual page), but stay away from the advanced features for a little while.

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Bell实验室的Philip Wadler在1998年通过电子邮件传阅的未发布的文章中创造了表达式问题这个词(请参考参考资料)。

Philip Wadler of Bell Labs coined the term Expression Problem in an unpublished paper that he circulated by email in 1998 (see Resources).

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