perl split line on whitespace

Reference Common Perl Command Line options Common unix Commands: perl implements sed awk tr nl   Perl, sed, awk, tr, grep, nl, and other common commandsSed Task Sed Perl Replace12WithTwelve sed 's/12/twelve/g' perl -pe '

One, List A list is a sequence of values enclosed in parentheses that can be any value or NULL, such as: (1, 5.3, "Hello", 2), empty list: ().Note: A list containing only one numeric value (for example: (43.2)) is different from the value itself

First, Introductionpattern refers to the character of a particular sequence that is searched for in a string, which is included by a backslash:/def/, Mode def. Its usage, such as combining function split, splits a string into multiple words in a

Split it splits the string according to the given pattern, and it is quite handy to decompose the extracted fields with this operator for strings that separate different fields with tabs, colons, whitespace characters, or any symbol. As long as you

Here is the DNA sequence, stored under window F:\perl\data.txt: Copy Code code as follows: Aaaaaaaaaaaaaagggggggttttcccccccc Cccccgtcgtagtaaagtatgcagtagcvg Ccccccccccggggggggaaaaaaaaaaaaaaattttttat Aaacg Here's the

An introduction to regular expressions in Perl First, Introduction Two, matching operator Iii. special characters in the pattern 1, character + 2, characters [] and [^] 3, character * and? 4, escape character 5. Match any letter or number 6, Anchor

First, Introduction Pattern refers to the character of a particular sequence that is searched for in a string, which is included by a backslash:/def/, Mode def. Its usage, such as combining function split, splits a string into multiple words in a

Preface PHP is widely used in the background CGI development of the web, usually after the user data data to obtain a certain result, but if the user input data is incorrect, there will be problems, such as someone's birthday is "February 30"! What

Perl has the best text-processing capabilities. This is what everyone knows. In Perl itself, there is a small function that no other software has, the Perl format. It is equivalent to simple command-line reports and chart output. This needs to be

By its very nature, a regular expression (or RE) is a small, highly specialized programming language that is embedded in Python and implemented through the RE module. With this small language, you can specify rules for the set of strings that you