Perhaps it's just a coincidence, but all the words in your array are stop words. Since you've already been given excellent examples of how to work with your specific variables, here's an option that removes stop words from the strings you've provided--in case that's your primary goal:

use Modern::Perl;
use Lingua::StopWords qw( getStopWords );

my $str  = "is that true";
my $str1 = "this is from presentation";
my $str2 = "to create";

say removeStopWords( eval $_ ) for qw{$str $str1 $str2};

sub removeStopWords {
    my $stopWords = getStopWords('en');
    join ' ', grep { !$stopWords->{$_} } split ' ', $_[0];
}

[download]

Results:

true
presentation
create

[download]

Just include line 2 above in your code, and send a string to removeStopWords and it'll return it sans any stop words.

Hope this helps!

In reply to Re: Deleting values from string using array by Kenosis
in thread Deleting values from string using array by Shaveta_Chawla

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.