No Manifest Available for String

[romainreuillon]

Compiler version

[reuillon:~/Projects/gridscale] master(+63/-57,1) ± scala3-repl --version Scala code runner version 3.0.1 -- Copyright 2002-2021, LAMP/EPFL

Minimized code

manifest[String]

Output

1 |manifest[String]
  |                ^
  |                No Manifest available for String.

Expectation

A manifest for the type String

[Kordyjan]

For now, there is no support for summoning Manifest instances in scala 3. As a workaround for most use cases, you can use ClassTag.

[Kordyjan]

Also, there was a discussion under #9482, which is sort of relevant.

[bishabosha]

We could keep this open as #9482 is about summoning OptManifest, this is for summoning Manifest, or we keep one?

[smarter]

let's close in favor of #9482, if we can do one we can do the other.

As a workaround for most use cases, you can use ClassTag.

In fact it's more than a workaround, please treat Manifest as deprecated and use ClassTag instead.