Just for fun, here's a modest alternative:

  sub scan {
    my ($sentence, $wanted) = @_ ;

    while (length($wanted)) {
      return 0 if ($sentence !~ m/([$wanted])/g) ;
      $wanted =~ s/$1// ;
    } ;

    return 1 ;
  } ;

[download]
which starts by scanning the sentence for any of the wanted characters, and removes each one it finds from the wanted list before scanning from where it left off.

This may, or may not, be quicker than scanning for each wanted character individually -- indeed, that is probably quicker if you could arrange to scan for unusual characters first.

Mind you, you didn't say why you need a smarter solution. Or, indeed, what counts as smarter in this context.

In reply to Re: check if all certain chars are found in a sentence by gone2015
in thread check if all certain chars are found in a sentence by tallulah

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.