In awk, I'd like to check if a field is blank.
And by blank I mean, the field could be "" or " "
In other words, the field could either be empty, or be filled with spaces.
Would the regex look like this?
$5 ~ // { Action }?
What other ways are there?
Hmm.. in any case I think... (7 Replies)
Hello,
I have a record which split with "," I would like to check..if the field is empty and it will field "NIL" into the field.
input
45111,40404,peter,,0303403,0,030304,john,,9,0,
output
45111,40404,peter,NIL,0303403,0,030304,john,NIL,9,0, (8 Replies)
Hello,
I have a file with a lot of record like below:
00001,CUSTR,CUSTOMER ADDRESS,02310,N,0:00,0,0,0,0,0,0,0,0,0,0,0,0:00,0,0,0,0,0,CSH,ACC
Can I validate each record in the file and output the incorrect result?
field 1 - customer number, should be "5 digit.
field 2 - should be 5... (9 Replies)
Hi
I use the following code to read the file and to fix the length of the column of the record in the file 'Sample.txt'
ls Samp* | awk '
{ a=$1 }
END{
FS="n"
for(i=1;i<=NR;i++)
{
while( getline < a )
{
f1=$0;
print("Line::",f1);
f2=substr(f1,1,10)
print("Field1::",f2);... (10 Replies)
Hi all,
I have a huge file and I need to get ride of the fields 6-11 and replace the blanks in field 5 with a missing value(99999).
159,93848,5354,343,67898,45,677,5443,434,5545,45
677,45545,3522,244,
554,54344,3342,456,
344,43443,2344,444,23477... (12 Replies)
Hi everyone..
I'm trying to eliminate multiple whitespaces from a file..
I must make use of shell script to eliminate whitespaces..
Take a look at the sample file
1 int main()
2 {
3 int a,b;
4 printf("Enter the values of a and b");
5 scanf("%d%d",&a,&b);
6 if(a>b) ... (6 Replies)
I have this
text.filecharles darwin sam delight
george washington johnson culper
darwin sam delight
micheal jackson penny lite and would like to remove the row, if the first field is blank. so the result would be:
result.filecharles darwin sam ... (4 Replies)
Hi,
I have the following file, I'd like to add an additional blank field to this file
This is a tab delimited file, I have tried the same thing on excel, but looking for a unix solution.
Here is my input:
Country Postal Admin4 StreetBaseName StreetType
HUN 2243 Kóka Dózsa György ... (3 Replies)
Find a blank field
Hi
I have set of fields that have some blank values, how to find that and get its line noumbers in output file.
Ex:
Col1 col2 col3
11 ss 103
12 104
13 105
14 se 106 (2 Replies)
Hi All,
i have a file like
col1 col2 col3
13 24 NA
12 13 14
11 12 13
14 22 NA
18 26 NA
in this file if i found "NA" other values in the line are also replace by NA
Could you help me! (7 Replies)
Discussion started by: Shenbaga.d
7 Replies
LEARN ABOUT OSX
moose::autobox
Moose::Autobox(3) User Contributed Perl Documentation Moose::Autobox(3)NAME
Moose::Autobox - Autoboxed wrappers for Native Perl datatypes
SYNOPOSIS
use Moose::Autobox;
print 'Print squares from 1 to 10 : ';
print [ 1 .. 10 ]->map(sub { $_ * $_ })->join(', ');
DESCRIPTION
Moose::Autobox provides an implementation of SCALAR, ARRAY, HASH & CODE for use with autobox. It does this using a hierarchy of roles in a
manner similar to what Perl 6 might do. This module, like Class::MOP and Moose, was inspired by my work on the Perl 6 Object Space, and the
'core types' implemented there.
A quick word about autobox
The autobox module provides the ability for calling 'methods' on normal Perl values like Scalars, Arrays, Hashes and Code references. This
gives the illusion that Perl's types are first-class objects. However, this is only an illusion, albeit a very nice one. I created this
module because autobox itself does not actually provide an implementation for the Perl types but instead only provides the 'hooks' for
others to add implementation too.
Is this for real? or just play?
Several people are using this module in serious applications and it seems to be quite stable. The underlying technologies of autobox and
Moose::Role are also considered stable. There is some performance hit, but as I am fond of saying, nothing in life is free. Note that this
hit only applies to the use of methods on native Perl values, not the mere act of loading this module in your namespace.
If you have any questions regarding this module, either email me, or stop by #moose on irc.perl.org and ask around.
Adding additional methods
Moose::Autobox asks autobox to use the Moose::Autobox::* namespace prefix so as to avoid stepping on the toes of other autobox modules.
This means that if you want to add methods to a particular perl type (i.e. - monkeypatch), then you must do this:
sub Moose::Autobox::SCALAR::bar { 42 }
instead of this:
sub SCALAR::bar { 42 }
as you would with vanilla autobox.
METHODS
mixin_additional_role ($type, $role)
This will mixin an additonal $role into a certain $type. The types can be SCALAR, ARRAY, HASH or CODE.
This can be used to add additional methods to the types, see the examples/units/ directory for some examples.
TODO
More docs
More tests
BUGS
All complex software has bugs lurking in it, and this module is no exception. If you find a bug please either email me, or add the bug to
cpan-RT.
AUTHOR
Stevan Little <stevan@iinteractive.com>
with contributions from:
Anders (Debolaz) Nor Berle
Matt (mst) Trout
renormalist
COPYRIGHT AND LICENSE
Copyright 2006-2008 by Infinity Interactive, Inc.
<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.16.2 2012-08-29 Moose::Autobox(3)