subroutine

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Perl: cmpthese text vs anonymous sub problems with parameters passed

If you read about cmpthese in the Perl Benchmark module\'s documentation, it states that cmpthese or timethese can be used with code in either text or subroutine references. The documentation seems to[详细]

2023-01-25 19:38 分类：问答
Finding the last "}" of a subroutine

Supposed I have a file with Perl-code: does somebody know, if there is a module which could find the closing \"}\" of a certain subroutine in that file.[详细]

2023-01-24 12:20 分类：问答
How does @_ work in Perl subroutines?

I was always sure that if I pass a Perl subroutine a simple scalar, it can never change its value outside the subroutine. That is:[详细]

2023-01-23 15:06 分类：问答
Encapsulating Recursive Function in Perl

I have a code that works well here: #!/usr/bin/per开发者_如何学Gol use strict; use warnings; use Data::Dumper;[详细]

2023-01-23 02:41 分类：问答
Why does invoking print in a subroutine append 1 to the string?

I have created the following subroutine gender to randomly print string MALE or FEMALE. When subroutine is invoked, the print command suffixes a \"1\" at the end of the string. See the sa开发者_如何学[详细]

2023-01-23 00:20 分类：问答
How can I inline Perl subroutines?

I am reading Code Complete 2, and one of the points mentioned is about creating subroutines even for operations that seem too simple to have their own subroutines, and how that can be helpful.[详细]

2023-01-22 21:12 分类：问答
What is the CORE:match (opcode) subroutine in Perl profiling?

I previously wrote some utilities in Perl, and I am now rewriting them in order to give s开发者_运维技巧ome new/better features. However, things seem to be going much more slowly than in the original[详细]

2023-01-22 05:18 分类：问答
What does () accomplish in a subroutine definition in Perl?

The following code is lifted directly from the source of the Tie::File module.What do the empty parentheses accomplish in the definiti开发者_JAVA技巧on of O_ACCMODE in this context?I know what subrout[详细]

2023-01-21 05:49 分类：问答
How can I open a file only if it is not already open, in Perl?

If I have a subroutine that opens a file what is the best way to ensure it opens it only upon the first time the subrountine is called?I have this but not su开发者_StackOverflowre if its best practice[详细]

2023-01-20 00:13 分类：问答
Should I use nested subroutines in Perl?

I have 5 Perl files that are verification scripts for 5 different states of my environment. Each of them has at least a couple of subroutines.[详细]

2023-01-18 14:04 分类：问答