Question

I am building an array from a datafile that is used as a parameter list to a cached SQL statement. This is for perl DBI running against an Oracle database.

For example:

@params = ("This", "that", "NULL", "finish");

I need this changed to:

@params = ("This", "that", undef, "finish");

I have googled for this and map with s/// is suggested for string substition. I do not know how to undef an element in an array for a given condition.

Answer 1

for (@params) { $_ = undef if $_ eq 'NULL'; }