G'day Statue,

Welcome to the monastery.

That's illegal; it's got nothing to do with the array:

$ perl -E '
    my $x = "z";
    my $y = 1;
    my $$x = $y;
    say $z;
'
Can't declare scalar dereference in "my" at -e line 4, near "$x ="
Execution of -e aborted due to compilation errors.
[download]

If you didn't want a my variable, you could do this:

$ perl -E '           
    my $x = "z";
    my $y = 1;
    $$x = $y;
    say $z;
'
1
[download]

You could eval a string containing that code but the scope of the lexical variable so declared would only be that string:

$ perl -E '
    my $x = "z";
    my $y = 1;
    eval "my \$$x = \$y; say \">>>\$z<<<\"";
    say ">>>$z<<<";
'
>>>1<<<
>>><<<
[download]

If you're actually trying to write code that writes code, your best bet might be to output the generated code to a file (e.g. script_my_script_wrote.pl) which you could subsequently run in the normal fashion. For example, this code in your generating script:

print $out_script_fh "my \$$splitter[0] = $splitter[1];";
[download]

Would write this line into script_my_script_wrote.pl (or whatever you call it):

my $testval = 1;
[download]

[Aside: this is your first post so the title "Self-writing code revisited" doesn't make much sense. Perhaps a link to whatever you're revisiting would help to clarify what you mean.]

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

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:
	&		&
	<		&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.