In Javascript I go for array like this: 

    
let myArray = ["alfa", "beta", "gamma"]; 
myArray.forEach(
           (elem, position) => console.log(`at position ${position} th
+ere is ${elem}`)
)

[download]

and I get the result: 

at position 0 there is alfa 
at position 1 there is beta
at position 2 there is gamma

[download]

The same in perl: 

my @myArray = qw(alfa beta gamma)
grep { warn "at position ??? there is $_\n" } @myArray;

[download]

result: 

at position ??? there is alfa
at position ??? there is beta
at position ??? there is gamma

[download]

What to put instead of question marks?

In reply to grep { } positional number of element by leszekdubiel

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.