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option.go
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option.go
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// Go Substrate RPC Client (GSRPC) provides APIs and types around Polkadot and any Substrate-based chain RPC calls
// Copyright (C) 2019 Centrifuge GmbH
//
// This file is part of Go Substrate RPC Client (GSRPC).
//
// GSRPC is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GSRPC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package types
type option struct {
hasValue bool
}
// IsNone returns true if the value is missing
func (o option) IsNone() bool {
return !o.hasValue
}
// IsNone returns true if a value is present
func (o option) IsSome() bool {
return o.hasValue
}