push command in perl

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

transferred from: http://perl.apache.org/docs/general/perl_reference/perl_reference.html Use (), require (), do (),%inc and @INC explained The @INC array @INC is a special Perl variable which is the equivalent of the shell ' s PATH variable.

From: http://perl.apache.org/docs/general/perl_reference/perl_reference.html Use (), require (), Do (), % INC and @ INC explained   The @ INC Array @ INCIs a special Perl variable which is the equivalent of the shell'sPathVariable.

Chapter 2: References References are declared as scalar types (named variables starting with $), and reference is obtained using the \ operator. Modifying the referenced variable is equivalent to modifying the reference pointing to the

Part I Programming Perl 1 Perl Data Types 1.1 Funny Characters Type Character Example is a name for: Scalar $ $cents An individual value (number or string) Array @ @large

24 hours of Perl programming course questionsI. multiple choice questions1. Which of the following strings is incorrectly defined ()(1) 'Thank you'(2 )""(3) "A" friend "of yours"(4) "A/" friend/"of yours"2. Which of the following statements is

Perl, as a scripting language, can generate and execute code in real time. This feature can defer the compilation of code to the runtime, so it is called "Dynamic Code". In addition, Perl also provides exception handling mechanisms like Java and C +

All numbers have the same format internally in prel. In fact the Perl use double-precision floating-point value to store numbers. Creating charaters by code point: CHR (), and ord () metheds. E.g. $alef = chr(0x05df) ;$code_point = ord('d') ;  In

Most statement expressions in the Perl language are followed by a semicolon, separating the different Perl statements.The Perl interpreter can compile and run these two actions at a time. Perl uses a pair of anti-quotes "'" to indicate running