On 2015-03-06 6:26, Jacob McCoy Wade wrote:
I am trying to find out how I can validate more than one type of data
structure for a given value in a manifest? In particular I would like
to be able to have either a string or a hash be a valid data structure.
Something like:
if ($myvar != false) {
validate_string($myvar) || validate_hash($myvar)
}
Does anybody know if this is possible to do?
If you are using version >= 4.0.0 or >= 3.6 with future parser you can
use the type system to do this.
It looks like you want the value to be false (a boolean), a string
(including an empty string), or a hash (including an empty hash, you do
not care what the keys and values are).
if $myvar =~ Variant[Boolean, String, Hash] {
# it is one of those
}
Note that the above does not accept undef values (which is what I think
the intention was).
You can also use the function assert_type if you want a simple assertion
(or an error) rather than just having conditional logic.
assert_type(Variant[Boolean, String, Hash], $myvar)
Hope that helps.
- henrik
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