{{/* int */}}
{{ $myInt     :=  42   }} {{- $myInt }}
{{ $myInt     := -24   }} {{- $myInt }}
{{ $myInt     :=  4321 }} {{- $myInt }}  {{/* not ok: 4_321 */}}
{{ printf "%+v (T:%T #v:%#v)" $myInt $myInt $myInt }}

42
-24
4321  
4321 (T:int #v:4321)