perl file compare

! Preview· the development trend of language must be the combination of static and dynamic, flexible and economic· Perl is obscure, Python is elegant and clear, Ruby is smart, and PHP is simple· Perhaps elegance comes from the attention to detail

What is Perl? Perl is a high-level programming language, written by Larry Wall and many others, and incorporates the characteristics of many languages. It is mainly by the ubiquitous C language, followed by the SED, Awk,unix shell and at least a

Original: http://levi.cg.am /? Cat= 246 ! Preview · The development trend of language must be dynamic and dynamic combination and flexible · Perl is concise and obscure, python is elegant and clear, Ruby is exquisite and smart, and PHP is concise

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

Introduction to Perl syntax 1.PERL variables 1.1.Perl Variable Classification 1.2.Perl variables 1.2.1 Scalar variable 1.2.2 Array Variables 1.2.3 Scalar and array variables 1.2.4 Associative arrays 2

Learning Perl 4ed Reading Notes Chapter2 scalar data1. Numbers. All data (INT, float) is of the double type in Perl. Of course, sometimes Perl also uses integer to represent int internally, because this can improve the running speed of the program,

The development trend of the language must be the combination of dynamic and static data, the combination of strong and soft Perl, the concise and obscure Python, the elegant and clear Ruby, the concise and simple PHP, or the elegance of PHP, the

Preview ◆ The language development trend must be dynamic and dynamic combination and flexible. ◆ Perl is concise and obscure, python is elegant and clear, Ruby is exquisite and smart, and PHP is concise and simple ◆ Perhaps elegance comes from the

Perl|window first step, prepare the required files. Setting up PHP Local development for Windows is actually very simple, but the documentation for the use of these software is very difficult to understand and is in English. The following is a