cycl./map: The result of the Hashmap test for /usr/dict/words with fast C++ hashmap get queries, with the standard deviation in brackets. This tests the inlinability of the hash function in practise (see size). The smaller the better. size: The object size in byte on AMD64. This af...
public ObjectcomputeIfPresent(Object key, BiFunction remappingFunction) 参数:此方法接受两个参数: key与值关联的:key。 remappingFunction:function对值进行运算。 返回值:此方法返回与指定键关联的新的重新映射的值;如果映射返回null,则返回null。 以下示例程序旨在说明computeIfPresent(Key,BiFunction)方法: 范例...
//以下代码摘录于stl_hash_map.h //以下的hash<>是个function object,定义于<stl_hash_fun.h>中 //例如:hash<int>::operator()(int x)const{return x;} template <class _Key, class _Tp, class _HashFcn, class _EqualKey, class _Alloc> class hash_map { // requirements: __STL_CLASS_REQUIR...
A perfect hash function allows the storage of a set of records in a minimum amount of memory, like in a table of the size equal to the number of keys times the key size, is called minimal perfect hash function. Minimal perfect hash funct... ZJ Czech,G Havas,BS Majewski - 《Theoretica...
Migrate Git from SHA-1 to a stronger hash function. Background At its core, the Git version control system is a content addressable filesystem. It uses the SHA-1 hash function to name content. For example, files, directories, and revisions are referred to by hash values unlike in other ...
NamePathTypeDescription Digest Digest string The hash value as an output string. Digest Encoding DigestEnc string The digest encoding. Type Type string The hash function used. Key Key string The input value.Post an array for MD4Operation ID: MD4-POST-File Create...
SCHEME OF APPLYING THE MODIFIED POLYNOMIAL-BASED HASH FUNCTION IN THE DIGITAL SIGNATURE ALGORITHM BASED ON THE DIVISION ALGORITHM The present invention relates specifically to a modified digital signature algorithm together with a polynomial-based hash function, in which the last step of the calculation...
If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value. [Android.Runtime.Register("computeIfPresent", "(Ljava/lang/Object;Ljava/util/function/BiFunction;)Ljava/lang/Object;", "GetComputeIfPresent_Ljava_lang_Object_Ljava_...
The best known result so far was a semi free-start collision, in which the initial value of the hash function is replaced by a non-standard value, which is the result of the attack. In this paper we present a new powerful attack on MD5 which allows us to find collisions efficiently. ...
If the function returns null, the mapping is removed. If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged. Specified by: computeIfPresent in interface Map<K,V> Parameters: key - key with which the specified value is to...