btcsignals::signal::empty

Returns true if there are no enabled callbacks.

Synopsis

Declared in <util/btcsignals.h>

[[nodiscard, requires_capability(0x7fb96c3acec8), requires_capability(0x7fb984ed0de8), requires_capability(0x7fb967e4ebe8), requires_capability(0x7fb97e4a2828), requires_capability(0x7fb987182fc8), requires_capability(0x7fb94c1a4a88), requires_capability(0x7fb96b811e68), requires_capability(0x7fb964056ac8)]]
bool
empty() const;

Return Value

true if no connected callback is currently enabled.

NOTE

The return value should not be discarded.