错误信息 TypeError: lru is not a constructor 指出lru 被错误地当作构造函数来使用。在 JavaScript 中,如果尝试用 new 关键字去实例化一个非构造函数(比如普通对象、函数没有正确导出为构造函数等),就会抛出这样的错误。 2. 查找代码中引发此错误的 lru 相关部分 ...
$ npm --version /usr/lib/node_modules/npm/lib/es6/validate-engines.js:31 throw err ^ TypeError: LRU is not a constructor at Object.<anonymous> (/usr/lib/node_modules/npm/node_modules/semver/classes/range.js:188:15) at Module._compile (node:internal/modules/cjs/loader:1241:14) at Mod...
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This class is thread-safe. Perform multiple cache operations atomically by synchronizing on the cache:text/java 复制 {@code synchronized (cache) { if (cache.get(key) == null) { cache.put(key, value); } }} This class does not allow null to be used as a key or value. A return ...
(2-element Arrays). Each key-value pair is added to the new Map.// null is treated as undefined.constructor(limit:number,entries? :Iterable<[K,V]>);// Convenience constructor equivalent to `new LRUMap(count(entries), entries)`constructor(entries:Iterable<[K,V]>);// Current number of ...
IfmaxSizeis set, then this creates a safe limit on the maximum storage consumed, but without the performance benefits of pre-allocation. WhenmaxSizeis set, every itemmustprovide a size, either via thesizeCalculationmethod provided to the constructor, or via asizeorsizeCalculationoption provided ...
LEVELDB_EXPORTCache*NewLRUCache(size_tcapacity);classLEVELDB_EXPORTCache{public:Cache()=default;Cache(constCache&)=delete;Cache&operator=(constCache&)=delete;// Destroys all existing entries by calling the "deleter"// function that was passed to the constructor.virtual~Cache();// Opaque handle...
This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.Public 类型 using DestroyFunc = std::function< bool(Element *)>Public 成员函数 MapNodeCache (unsigned int capacity, const DestroyFunc &destroy_func) The constructor. ~MapNodeCache () The destructor. bool...
This is important in cases where afetchMethodisonlycalled as a background update while the stale value is returned, whenallowStaleis used. This is implicitly in effect whenallowStaleOnFetchRejectionis set. This may be set in calls tofetch(), or defaulted on the constructor, or overridden by...
// a storage-unbounded ttl cache that is not an lru-cacheconstcache={data:newMap(),timers:newMap(),set:(k,v,ttl)=>{if(cache.timers.has(k)){clearTimeout(cache.timers.get(k))}cache.timers.set(k,setTimeout(()=>cache.delete(k),ttl))cache.data.set(k,v)},get:k=>cache.data....