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Postings from January 2022
On 2022-01-31 1:08 p.m., Dave Mitchell wrote:
> Again, with query parameters this is simple:
>
> sub name ($self, ??$has_value, $value = undef) {
> if ($has_value) {
> $self->{name} = $value; # even if undef
> }
> else {
> return $self->{name};
> }
> }
>
> $has_value is a boolean value which is true if there are any args
> remaining at that point in parameter processing.
Thanks for the explanation.
I kept hearing references to "query parameters" and they didn't really make
sense to me before in this context.
The only other place I hear "query parameters" is in reference to calling SQL
DBMSs from a program, and "query parameters" mean the same thing as plain old
"parameters", for example when one writes something like:
SELECT foo FROM bar WHERE baz = :quux
... and after you prepare that, each execution binds "quux" to an argument,
because it is a "query parameter".
-- Darren Duncan
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