Converts a slice of bytes into a string without performing a copy.

Checks whether an interface is nil or has the value nil.

Creates an AtomicBool with default to false.

Converts a string into a slice of bytes without performing a copy.

AtomicBool is an atomic Boolean Its methods are all atomic, thus safe to be called by multiple goroutines simultaneously Note: When embedding into a struct, one should always use *AtomicBool to avoid copy.