Re: Checking for blank string

What do you mean by "initialised"?

In your example, it seems the value is the empty string , which is defined. undef is undefined. To check for them, use

# empty string
defined $value && '' eq $value

# undefined
! defined $value
[download]

Check for definedness is needed in the first case, as `undef` stringifies to the empty string.

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,
[download]

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Re^2: Checking for blank string by Himaja (Novice) on Sep 26, 2016 at 08:28 UTC
By initialised, i mean i get a warning saying "Use of uninitialized value $data in string eq at /path with the following code: `next if ('' eq $data)`	[reply] [d/l]
Re^3: Checking for blank string by hippo (Archbishop) on Sep 26, 2016 at 08:46 UTC
In that case, your `$data` really is undefined. I would rewrite your statement like this: `next unless defined $data;` [download] TIMTOWTDI, of course.	[reply] [d/l] [select]