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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