[FlipperBucket]

I prefer a convention of semantically relevant variable names prefixed/suffixed by a letter indicating type.

[Sharlin]

Didn't we already collectively decide that Hungarian notation is a bad idea? About 20 years ago?

[FlipperBucket]

No. It's alive and particularly pragmatic in dynamic languages. The type of sigil, @ or $ or I or Array(space) are all equal to the interpreter. The difference is how offended you might be that type annotations are semantically identical.

[jetrink]

To be clear, the above examples are used when the function is designed to accept any such argument and only relevant info is the type.