正则表达式 – 如何使用正则表达式替换保留大小写的匹配？

发布时间：2020-12-13 21:53:35 所属栏目：百科来源：网络整理

导读：如何使用单个正则表达式替换所有单词与村庄的单词保留每个匹配的第一个字母的情况？输入示例： Towns are small cities. I live in a town. 期望的输出： Villages are small cities. I live in a village. $_ = "Towns are small cities. I live in a town

如何使用单个正则表达式替换所有单词与村庄的单词保留每个匹配的第一个字母的情况？

输入示例：

Towns are small cities. I live in a town.

期望的输出：

Villages are small cities. I live in a village.

$_ = "Towns are small cities. I live in a town.n";

s{ b (?: (T)|(t) ) own       }
 { $1 ? "Village" : "village" }xge;

print;

# prints: Villages are small cities. I live in a village.

（编辑：李大同）

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