github.com/mysteriumnetwork/node@v0.0.0-20240516044423-365054f76801/core/discovery/reducer/not.go (about)

     1  /*
     2   * Copyright (C) 2019 The "MysteriumNetwork/node" Authors.
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License as published by
     6   * the Free Software Foundation, either version 3 of the License, or
     7   * (at your option) any later version.
     8   *
     9   * This program is distributed in the hope that it will be useful,
    10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12   * GNU General Public License for more details.
    13   *
    14   * You should have received a copy of the GNU General Public License
    15   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16   */
    17  
    18  package reducer
    19  
    20  import (
    21  	"github.com/mysteriumnetwork/node/market"
    22  )
    23  
    24  // Condition defines sub condition given for Not()
    25  type Condition func(market.ServiceProposal) bool
    26  
    27  // Not returns a matcher for checking if given conditions is negated
    28  func Not(condition Condition) func(market.ServiceProposal) bool {
    29  	return func(proposal market.ServiceProposal) bool {
    30  		return !condition(proposal)
    31  	}
    32  }