perl sort unique

Introduction to the Sort function-general Linux technology-Linux programming and kernel information. The following is a detailed description. Introduction to Sort Functions Definition and syntax Sort by numerical order Sort by ASCII order

How to Use eclipse to debug a Perl application before 11:30:36 This tutorial will introduce the debugging functions provided by the eclipse epic plug-in. This plug-in provides a rich debugging environment that can be used in the epic Perl

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

One, what is Perl Hash A hash is a data structure, and a similar array, that can be stored in or retrieved from a value. However, unlike arrays, the index is not a number, but a name. That is, the index (here, we call it key) is not a number but an

Use memcached to write down Data stored in memcached is stored in the memory storage space built in memcached.Because the data only exists in the memory, restarting memcached and the operating system will cause all data to disappear.In addition,

Introduction to the Perl language instructions for a scalar scalar constant numeric string number and string conversion scalar variable Print output result comparison operator get user input undef value scalar context two list array list arrays note

Use the memcached, write down The data saved in the memcached is stored in the memcached built-in memory storage space. Because the data exists only in memory, restarting memcached and restarting the operating system can cause all data to disappear.

Perl Learning 5 Hash, perllearninghash [This article is original. Do not reprint it without permission] Hash is a data structure. It is similar to an array in that it can accommodate any number of values and can be used as needed. The difference

Figure: Copy Code code as follows: #!/usr/bin/perl # # Fdupe tool-finding Duplicate files # # $Id: fdupe,v 1.7 2011/10/14 20:11:21 root EXP root $ # # Source Code Copyright (c) 1998,2011 Bernhard Schneider. # May is used

Use of mysqlsla, a log tool for slow database query, which is more powerful than mysqldumpslow. Install mysqlslaSource code path: https://github.com/daniel-nichter/hackmysql.comSource code storage path:/usr/local/src1. Get source codeIf you do not