Can I call a Box<FnOnce()>? If I write let f: Box<FnOnce()> = Box::new(|| ()); f() I get “cannot move a value of type core::ops::FnOnce(): the size of core::ops::FnOnce() cannot be statically determined”.

Can I call a Box<FnOnce()>?

gkoz March 31, 2015, 9:14am 2

A temporary workaround is to use Invoke. It's not clear how this is going to be resolved for 1.0.
https://github.com/rust-lang/rust/issues/19878

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