On Tuesday, June 25, 2013 11:06:21 AM UTC-5, Claudio wrote:
Given the manifest:
$a = 1
$b = 1 + 0
$c = 1.1
$d = 1.1 + 0
$result = inline_template(
a %= @a.class % %= @a %
b %= @b.class % %= @b %
c %= @c.class % %= @c %
d %= @d.class % %= @d %
)
notify {
$result:
}
The output is:
a String 1
b Fixnum 1
c String 1.1
d Float 1.1
Is this working as intended?
I think so. Puppet DSL does not require most string literals to be quoted,
so it can distinguish numeric-form strings from actual numbers only by how
they are produced or used. I think it reasonable for Puppet to treat all
values as strings except where it has specific reason to do otherwise.
That's not the only possible approach, but I think it's probably the best
fit for Puppet.
How can I identify number types within the template without adding + 0
on the manifest? I'm aware that it's not a good idea to duck-type on
templates but I'm still wondering.
It depends on what you mean by that. Apparently it's not about identifying
whether Puppet is treating the value as numeric, so I guess it's about
whether the value is numeric in form. Perhaps you could do something along
these lines:
%
begin
num = Float(@maybe_num)
# It can be interpreted as a number
rescue
# It's not numeric
end
%
Really, though, this should not be necessary. The DSL code calling the
template should know how to use it appropriately (else it has no business
using it at all).
John
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