in reply to Perl memset equivalent?

Ostensibly:

use constant STN_NAME_LEN => 5;

$stn_names[ $recordCount ] = chr(0) x STN_NAME_LEN;

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But there is bound to be more behind this question than you are telling us.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?

In Section Seekers of Perl Wisdom