Perl language learning notes 15 smart matching and give-When Structure

1. Intelligent Matching Operator

Alternative binding OPERATOR:

Search for a key in the hash:

Compare whether the two arrays are identical:

Check whether an element exists in the list:

The Intelligent Matching operator is irrelevant to the sequence ,~~ Left and right elements can be exchanged

2. Intelligent operator priority

3. Given statement

Equivalent to the switch statement in C Language

4. Given can test multiple conditions and use break before default. Otherwise, the default is always executed.

5. Clumsy match (regular expression)

6. When matching for multiple projects

You can add other statements in the middle of the statement: