I. Data Types(Data type):
Perl has four data types: Scalar (variable), Scalar Array (Array), Hash Array (Hash), and References (pointer ), it seems to be rare, but it is more than enough to use it. Especially when writing Perl programs, you do not
one. DataType (data type ):Perl's data types are roughly four: Scalar (variables), Scalar Array (array), hash array (hash), References (pointer), but they seem to be small but more than sufficient. In particular, you can write a Perl program without
Enable Perl before compiling Vim;
Use the Perl interface ** Perl-using **: Perl **: Pe *: PE [RL]{cmd}Run the Perl Command{cmd}. The current package is "Main ". : PE [RL] {endpattern}{script}{endpattern}Execute the Perl
About the origins and characteristics of Perl and Python
Perl is the abbreviation of practical extraction and report Language, created by Larry Wall in 1987, originally designed to facilitate the processing of reports on UNIX, and has become a fully
1. List and array. The list mentioned in this book is a data structure. array is the data type used to store the list in Perl. In most cases, these two words can be exchanged, meaning the same. Unlike C, the Perl array does not need to define the
What is Perl?
Perl is a free and open-source scripting language created by Larry Wall. This language is mainly intended for practical and rapid development,
Structured Programming is incompatible with the popular object-oriented programming.
1. Length of the array:
If you assign an array variable to a scalar variable, the length of the array is assigned to the scalar variable:
$ A = @ array; # The length of the array @ array is stored in the scalar variable $ A, that is, the number of
Regular expressions are a major feature of the Perl language and a bit of a pain in the Perl program, but if you have a good grasp of him, you can easily use regular expressions to complete the task of string processing, of course, in the CGI
The previous article lists the similarities and differences between the ways of objects and JS in Perl. This continues to complement the array, the hash of the associated operation.
One, array
You can add additions and deletions to the array.
How to delete a value from an array in Perl
This article mainly introduces how to delete a value from an array in Perl? This article explains how to assign an array element to undef and then delete the element from the array. For more information,
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