Updating lots of database fields in a single row

William Blunn bill+london.pm at blunn.org
Wed Jan 23 09:57:13 GMT 2013

On 23/01/2013 09:40, Ruud H.G. van Tol wrote:
> On 2013-01-23 10:27, William Blunn wrote:
>> my @fields_to_update = grep { $hash->{$_} } @fields;
> Be aware that it skips any false value, like undef, '', '0', 0.


I wouldn't usually do a straight truth test on a scalar value myself, 
unless the preceding code logic meant that it contained a boolean value.

I only coded it this way to match that part of the original semantics.

I think the OP would be well advised to consider using a more explicit 
test such as:

exists $hash->{$_}



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