52 lines
1.3 KiB
Mathematica
52 lines
1.3 KiB
Mathematica
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/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* See the NOTICE file distributed with this work for additional
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* information regarding copyright ownership.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "LRUCacheNode.h"
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@interface LRUCacheNode ()
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@property (nonatomic, readwrite) id value;
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@property (nonatomic, readwrite) id<NSCopying> key;
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- (instancetype)initWithValue:(id)value key:(id<NSCopying>)key;
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@end
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@implementation LRUCacheNode
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- (instancetype)initWithValue:(id)value key:(id<NSCopying>)key
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{
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if (nil == value) {
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return nil;
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}
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if ((self = [super init])) {
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_value = value;
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_key = key;
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}
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return self;
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}
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+ (instancetype)nodeWithValue:(id)value key:(id<NSCopying>)key
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{
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return [[LRUCacheNode alloc] initWithValue:value key:key];
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}
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- (NSString *)description
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{
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return [NSString stringWithFormat:@"%@ %@", self.value, self.next];
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}
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@end
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