You could make some specialized types or exploit some of the combined types
that Nim already defines. For example:
proc double[T: SomeFloat](x : T) : T = x
proc double[T: SomeInteger](x : T) : T = 2 * x
echo double(1.0)
echo double(1)
echo double(1'i64)
Run
`SomeInteger` is defined in system.nim
([https://github.com/nim-lang/Nim/blob/devel/lib/system.nim](https://github.com/nim-lang/Nim/blob/devel/lib/system.nim))
as:
SomeSignedInt* = int|int8|int16|int32|int64
## Type class matching all signed integer types.
SomeUnsignedInt* = uint|uint8|uint16|uint32|uint64
## Type class matching all unsigned integer types.
SomeInteger* = SomeSignedInt|SomeUnsignedInt
## Type class matching all integer types.
Run
