Introduction
update time：2018-01-12Regular expression (Regular Expression) is a text pattern that includes ordinary characters (for example, letters between a and z) and special characters (called "metacharacters").
Regular expressions use a single string to describe and match a series of strings that match a certain syntax rule.
Regular expressions are cumbersome, but they are powerful. After learning, applying them will not only improve your efficiency, but also give you an absolute sense of accomplishment. As long as you read this tutorial carefully and make certain references when applying it, mastering regular expressions is not a problem.
Many programming languages support string manipulation using regular expressions.
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