How to learn regular expressions
Introduction
update time：2018-02-08Regular expression concepts
Regular expressions, also known as regular expressions and regular expressions (English: Regular Expression, often abbreviated as regex, regexp or RE in code), are a concept in computer science. Regular expressions use a single string to describe and match a series of strings that match a certain syntax rule. In many text editors, regular expressions are often used to retrieve and replace text that matches a certain pattern.
In our daily work, we often write regular expressions. For example, in forms, we often use regular expressions to verify whether the format of user input is correct. We can think of regular expressions as a language that can describe problems. It is specially designed for pattern matching
Regular expressions, also known as regular expressions and regular expressions (English: Regular Expression, often abbreviated as regex, regexp or RE in code), are a concept in computer science. Regular expressions use a single string to describe and match a series of strings that match a certain syntax rule. In many text editors, regular expressions are often used to retrieve and replace text that matches a certain pattern.
In our daily work, we often write regular expressions. For example, in forms, we often use regular expressions to verify whether the format of user input is correct. We can think of regular expressions as a language that can describe problems. It is specially designed for pattern matching
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