Here's a better example of what I'm talking about.
Imagine you have two files foreignFile.nim and myFile.nim.
foreignFile.nim
template p[T:int|float](a : T) =
echo "Number:" & $a
template p(a : string) =
echo "String:" & a
proc printVar*[T:int|float|string](a : T) =
p(a)
Run
All the templates printVar should call are already defined but p isn't bound so
it can potentially use new templates/procs/etc defined in the future.
myFile.nim
import foreignFile
var x = 0
template p(a : int) =
x += a
echo x
p(7)
printVar(5)
printVar(5.0)
printVar("5.0")
Run
In this example you've inadvertently overwritten p from myFile when aProc is
passed an int. It will echo 12 instead of Number:5. You only wanted to call
your new p definition directly. In this case the generic printVar proc should
probably be three seperate printVar definitions instead of
proc printVar*[T:int|float|string](a : T)
Run
