validation: stop ignoring bogus arguments, throw exceptions #301
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Some methods, most notably ->mkdir and ->mkpath and ->remove_tree,
expected a single hash reference (or nothing) as an argument. If passed
a string (for example), they would treat it like {}.
This hid this broken code:
path($root)->mkdir('name-of-child');
It would not create $root/name-of-child, but would ensure that $root
existed, then return.
This code will notice extra or non-hashref arguments and raise an
exception. An explicit undef is permitted, although only out of a sense
of caution.
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Some methods, most notably ->mkdir and ->mkpath and ->remove_tree, expected a single hash reference (or nothing) as an argument. If passed a string (for example), they would treat it like {}.
This hid this broken code:
It would not create $root/name-of-child, but would ensure that $root existed, then return.
This code will notice extra or non-hashref arguments and raise an exception. An explicit undef is permitted, although only out of a sense of caution.
This fixes #300