[wazzaps]

Copying a mutex by value (thus duplicating the lock, causing deadlocks or worse) is far too easy

[icholy]

`go vet` catches this.

[mhh__]

I use a tool called "type theory"

[erik_seaberg]

Is there a way to declare any type uncopyable? This is something I always thought Ada got right.

[usefulcat]

Wow, even c++ won't let you do that (without invoking undefined behavior, anyway).