Add a callback to be run when the future becomes done.
The callback is called with a single argument - the future object. If the future is already done when this is called, the callback is scheduled with $(D_PSYMBOL callSoon())
See Implementation
Add a callback to be run when the future becomes done.
The callback is called with a single argument - the future object. If the future is already done when this is called, the callback is scheduled with $(D_PSYMBOL callSoon())