お問い合わせフォームにメールアドレスを入力すると「正しい形式」で入力してくださいというのをみかけたことはありませんか？ 正しいメールアドレスの形式で入力されているかをチェックするのに正規表現という手段が使われています。 主に以下の2つ ...

Acceptance Criteria GIVEN a regex tutorial WHEN I open the tutorial THEN I see a descriptive title and introductory paragraph explaining the purpose of the tutorial, a summary describing the regex ...

The first half of this tutorial introduced you to regular expressions and the Regex API. You learned about the Pattern class, then worked through examples demonstrating regex constructs, from basic ...

All but the most casual Linux users no doubt have encountered regular expressions, if only in a cursory manner. Regular expressions are extremely powerful and flexible pattern-matching and -replacing ...

In this lesson, you’ll learn how to use RegEx (regular expressions) to work with sets of characters. Unlike the ., which matches any single character , sets enable you to match specific characters and ...

I was involved in a recent discussion on the "best" way to remove a given parameter from a URL string. The conversation began with using string primitives to split and join the parameter, a method ...