perl

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read input file, match and remove data and write remaining lines to a new file

I am stuck trying to get this to write out the contents of the file. What I am trying to do is open an input file, filter out/remove the matched line and write to a new file. Can someone show me how t[详细]

2023-04-13 10:02 分类：问答
How to check Space between Two images

Consider there are two images in a webpage. I want know if they have any space rendere开发者_如何学运维d between them.[详细]

2023-04-13 09:26 分类：问答
What does the qw(:everything) do on a use line in perl?

This is an embarrassing question to ask but why does this line work while the other doesn\'t? Working line:[详细]

2023-04-13 08:44 分类：问答
croaking from a Moose BUILD method

I want my class to blow up if the BUILD method fails. However, if I use croak to handle the error, the error gets reported from Class/MOP/Method.pm, rather than the caller\'s code. (That is to say, th[详细]

2023-04-13 08:04 分类：问答
Perl XML:Simple read xml pairs and execute something on each of them

I have a XML file which contains the below section: <cptasks> <copy file=\"file1.txt\" to=\"folder1/folder21\" />[详细]

2023-04-13 07:46 分类：问答
How do I do my Perl homework assignment?

Given a perl hash structure { \'A\' => { \'B\' => \'C\', \'D\' => \'E\' }, \'F\' => { \'B\' => \'G\',[详细]

2023-04-13 07:14 分类：问答
Perl: Reading from a database table line by line

Is there someway to read from 开发者_如何学Pythona database table line by line using the DBI module? The table is huge and I keep running out of memory if I try to do a select. I\'m working with an or[详细]

2023-04-13 06:02 分类：问答
Curses::UI::Dialog does not respond to enter key

I 开发者_高级运维am trying to create a Curses::UI application. So far everything is working but my dialog does not seem want to respond to the enter key for closing. I have tried the samples and they[详细]

2023-04-13 05:41 分类：问答
Proccessing 2 million records with perl

I have 2 million records on the database is it possible to bring them all and store them on perl h开发者_开发百科ash reference without any problem of reaching out of memory ?What is your reason to rea[详细]

2023-04-13 04:45 分类：问答
processing data with perl - selecting for update usage with mysql

I have a table that is storing data that needs to be processed. I have id, status, data in the table. I\'m currently going through and selecting id, data where status = #. I\'m then doing an update im[详细]

2023-04-13 04:25 分类：问答