perl::critic::policy::controlstructures::prohibitdeepnests(3pm) [debian man page]
Perl::Critic::Policy::ControlStructures::ProhibitDeepNesUserpContributed Perl DocumPerl::Critic::Policy::ControlStructures::ProhibitDeepNests(3pm)NAME
Perl::Critic::Policy::ControlStructures::ProhibitDeepNests - Don't write deeply nested loops and conditionals.
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Deeply nested code is often hard to understand and may be a sign that it needs to be refactored. There are several good books on how to
refactor code. I like Martin Fowler's "Refactoring: Improving The Design of Existing Code".
CONFIGURATION
The maximum number of nested control structures can be configured via a value for "max_nests" in a .perlcriticrc file. Each for-loop, if-
else, while, and until block is counted as one nest. Postfix forms of these constructs are not counted. The default maximum is 5.
Customization in a .perlcriticrc file looks like this:
[ControlStructures::ProhibitDeepNests]
max_nests = 3
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
perl v5.14.2 2012-06-07 Perl::Critic::Policy::ControlStructures::ProhibitDeepNests(3pm)
Check Out this Related Man Page
Perl::Critic::Policy::ControlStructures::ProhibitUntilBlUser(Contributed Perl DocPerl::Critic::Policy::ControlStructures::ProhibitUntilBlocks(3pm)NAME
Perl::Critic::Policy::ControlStructures::ProhibitUntilBlocks - Write "while(! $condition)" instead of "until($condition)".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Conway discourages using "until" because it leads to double-negatives that are hard to understand. Instead, reverse the logic and use
"while".
until($condition) { do_something() } #not ok
until(! $no_flag) { do_something() } #really bad
while( ! $condition) { do_something() } #ok
This Policy only covers the block-form of "until". For the postfix variety, see "ProhibitPostfixControls".
CONFIGURATION
This Policy is not configurable except for the standard options.
SEE ALSO
Perl::Critic::Policy::ControlStructures::ProhibitPostfixControls
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
perl v5.14.2 2012-06-07 Perl::Critic::Policy::ControlStructures::ProhibitUntilBlocks(3pm)
I have to to read files simultaneously in two nested loops,but am getting error can anyone do the needful.
useridFile=userIds.txt
fname=kiran.txt
exec<$useridFile
while read line
do
echo "User IDs are..$line"
USER_ID=$line
REMOTE_DIR_LOCATION="/home/test/$USER_ID"
SOURCE_DIR=$USER_ID... (1 Reply)
Hello All,
I would like to know and understand the difference between the below 3 IF loops and also if possible what are the different other parameters i could use other than those mentioed in the below lF LOOP conditions, appreciate your help.
Thanks,
Sam. (1 Reply)
I need help getting over this bump on how nested for loops work in shell. Say i was comparing files in a directory in any other language my for loop would look like so
for(int i=0;to then end; i++)
for(int y = i+1; to the end; y++)
I can't seem to understand how i can translate that... (5 Replies)
KSH isn't my strong suit but it's what my company has to offer. I've got a script with two nested loops, a FOR and UNTIL, and that works fine. When I add a CASE into the mix I end up getting "Unexpected 'done' at line xx" errors. Any suggestions on this?
for divi in at ce ci cm co de di fl... (9 Replies)
Hi experts,
I just want to know if there is a better solution to my nested while read loops below:
while read line; do
while read line2; do
while read line3; do
echo "$line $line2 $line3"
done < file3.txt
done < file2.txt
done < file1.txt >... (4 Replies)
I am trying to use two nested for loops to process some files and then create a new file using both variables in the output file name. I have several files in this naming style:
S1_L3_all_R1.fastq
S1_L3_all_R2.fastq
S1_L4_all_R1.fastq
S1_L4_all_R2.fastq
.
.
S1_L8_all_R1.fastq... (3 Replies)
Hi,
We have hundreds of c codes for which we need to identify and analyse all the if , nested if and while conditions used in code.. is thr any tool to do that. All we is like index (like 1.2.1.3 in case of nested if)and the corresponding code (may be wrriten in a table/file).
Thanks..! (2 Replies)
Hi.
Interesting set of brief essays ... cheers, drl
Slashdot
10% sample:
Code Is Design by Ryan Brush
Continuous Learning by Clint Shank
Do Lots of Deliberate Practice by Jon Jagger
Don't Touch that Code! by Cal Evans
Floating-point Numbers Aren't Real by Chuck Allison
Install Me... (1 Reply)