print map {( $_ =~ /^-?\d+$/ ? $_ * 2 : '-' ),"\n"} @array;

[download]

You could try something like this to catch integers.

print map {( $_ =~ /^-?(\d*\.)?\d+$/ ? $_ * 2 : '-' ),"\n"} @array;

[download]

Or something like this to catch numbers with decimals. Both of these will simply ignore leading zeros as perl is apt to do when converting strings to numbers.

In reply to Re^2: cool way of manipulating array elements by Kc12349
in thread cool way of manipulating array elements by pashanoid

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