[NetSIG] ansible question - are ansible variables interpreted as strings?

[Greg H]

I think it's more of a YAML question, so I checked Wikipedia -
https://en.wikipedia.org/wiki/YAML

YAML autodetects the datatype of the entity, but sometimes one wants to
cast the datatype explicitly. The most common situation is where a
single-word string that looks like a number, boolean or tag requires
disambiguation by surrounding it with quotes or using an explicit datatype
tag.

---
a: 123                     # an integer
b: "123"                   # a string, disambiguated by quotes
c: 123.0                   # a float
d: !!float 123             # also a float via explicit data type prefixed
by (!!)
e: !!str 123               # a string, disambiguated by explicit type
f: !!str Yes               # a string via explicit type
g: Yes                     # a boolean True (yaml1.1), string "Yes"
(yaml1.2)
h: Yes we have No bananas  # a string, "Yes" and "No" disambiguated by
context.

So I believe Ansible (via YAML) would autodetect this ...
---
my_greeting: Hello World!

... as a string. It looks like I could disambiguate this with quotes, but
in practice I like leaving off the quotes because I find it a bit easier to
read when there are many variables being defined.
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