使用正则表达式扫描子字符串并忽略区分大小写

Question

我有一个很长的文字，我正在尝试扫描它，以便在其中找到几个单词。 我正在寻找一种可以解决这个问题的功能，但会忽略大小写的敏感度。

非常重要：我无法将字符串更改为大写或大写！这是一个后期应用程序，如果我要改变它，回滚将是棘手的。

示例：

str = "According to a new report from TechCrunch, Apple has acquired the photo technology startup SnappyLabs. The company is a one-man development team known for creating the SnappyCam app."

word = "the"

str.scan(/word/) # need to find "the" and "The"

更新

如何获取单词首次出现的字符串索引？

如果有其他人需要，请使用str =~ (/word/i)（感谢@steenslag）

Answer 1

str = "According to a new report from TechCrunch, Apple has acquired the photo technology startup SnappyLabs. The company is a one-man development team known for creating the SnappyCam app."

word = "the"

str.scan(/#{word}/i) # need to find "the" and "The"

正则表达式之后的“i”使其忽略大小。