Perl Language Learning Note 15 Intelligent matching and give-when structure

1. Intelligent matching operator

Alternative binding operators:

Find a key in the hash:

The comparison of two arrays is exactly the same:

Find out if an element exists in the list:

The smart match operator is independent of order. ~ ~ Around the elements can be interchangeable

2, intelligent operator priority

3. Given statement

A switch statement equivalent to the C language

4, given can test multiple conditions, before default with a break. Doing so will cause default to run forever

5. Clumsy matching (normal form mode)

6. When to match multiple projects

Ability to add other statements to the middle of the statement:

Perl Language Learning Note 15 Intelligent matching and give-when structure