args.go
func (a *Args) HasBytes(key []byte) bool {
	return hasArg(a.args, b2s(key))
}
func (a *Args) HasBytes(key []byte) bool {
	return hasArg(a.args, b2s(key))
}
func ( a * Args ) HasBytes ( key [ ] byte ) bool { return hasArg ( a . args , b2s ( key ) ) }
// HasBytes returns true if the given key exists in Args.
HasBytes returns true if the given key exists in Args .