perl concatenate strings

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. Perl array (1 ): 1) initialize the array @ array = ("stringA", "stringB", "stringC ");2) print $ array [-1]; # output the stringC with the index (-1 + 3) % 3 = 23) dynamic growth $ array [4] = "stringD"; # Although $ array [3] is not used yet, it

1. Perl array (1): 1) initialize the array @ array = ("stringa", "stringb", "stringc "); 2) Print $ array [-1]; # output the stringc with the index (-1 + 3) % 3 = 2 3) dynamic growth $ array [4] = "stringd"; # Although $ array [3] is not used

#!/usr/bin/perlMy $tmp = "ye_qing";My @name = Split ("_", $tmp);My $list = "= = $name [0]== $name [1]==\n];Print $list;My @ye = (1,2,3,4);My @qing = (@ye, 4,5,6);$scount = @qing;Print "==sum: $scount ==\n";print "[Email protected]==\n";$count =

To generate a file name for a graphics file in the R language, the prefix is Fitbit, followed by the month after, plus ". jpg", first not Baidu, tried other languages similar grammar, not a viable:In C #: "Fitbit" + month + ". jpg"VB: "Fitbit" &

I took notes after reading instructor Xiao Bu's "SQLite Quick Start video tutorial ".   Lecture 1 What is SQLite?Why?How to get it? How to install?How to manage it?How to Use Perl to access SQLite data;How to use C or C ++;SQL features not

-- Start For the following Perl statement, $ name on the left of the equal sign is called a scalar, and "Shang Bo" on the right of the equal sign is called a String constant, it means to assign the String constant "Shang Bo" to the variable $ name. $

Over the years, many programming languages and tools have supported rule expressions ,. net base class library contains a namespace and a series of classes that can fully utilize the power of Rule expressions, and they are also compatible with

C # application of regular expression in replace !, Over the years, many programming languages and tools have supported regular expressions ,. NET base class library contains a namespace and a series of classes that can fully utilize the power of

Over the years, many programming languages and tools have supported regular expressions ,. net base class library contains a namespace and a series of classes that can fully utilize the power of Rule expressions, and they are also compatible with