根据数据结构的共识我们知道hashtable类型是要比string类型更占用空间, 而ziplist类型与string类型占用的空间基本相差不大。 如下图就是ziplist的存储的格式 那我们接下来分别分析redis的string和hash类型占用空间方面的知识 string类型: string类型当然如其名,如果json数据以string类型去存储,那么它的空间占用
you should consider choosing a more secure hash function when using a GHashTable with keys that originate in untrusted data (such as HTTP requests). Using g_str_hash() in that situation might make your application vulnerable
it is provided with the length (slen). */unsignedchar*sval;unsignedintslen;/* When integer is used, 'sval' is NULL, and lval holds the value. */longlonglval;}ziplistEntry;//ziplist.c/* We use this function to receive
(The hash value of the empty string is zero.) Overrides: hashCode in class Object Returns: a hash code value for this object. See Also: Object.equals(java.lang.Object) , Hashtable indexOfpublic int indexOf(int ch)Returns the index within this string of the first occurrence of the...
*/ private final char value[]; /** Cache the hash code for the string */ private int hash; // Default to 0 而后并没有对外提供可以修改这两个属性的方法,没有set,没有build。 1.2 Public的方法都是复制一份数据 String有很多public方法,要想维护这么多方法下的不可变需要付出代价。每次都将创建新...
md5_file()Calculates the MD5 hash of a file metaphone()Calculates the metaphone key of a string money_format()Returns a string formatted as a currency string nl_langinfo()Returns specific local information nl2br()Inserts HTML line breaks in front of each newline in a string ...
The length of the new String is a function of the charset, and hence may not be equal to the length of the subarray. The behavior of this constructor when the given bytes are not valid in the given charset is unspecified. The CharsetDecoder class should be used when more control over ...
Finally, don't use the hash code instead of a value returned by a cryptographic hashing function if you need a cryptographically strong hash. For cryptographic hashes, use a class derived from the System.Security.Cryptography.HashAlgorithm or System.Security.Cryptography.KeyedHashAlgorithm class. For...
Retrieves an object that can iterate through the individual characters in this string. GetHashCode() Returns the hash code for this string. GetHashCode(ReadOnlySpan<Char>, StringComparison) Returns the hash code for the provided read-only character span using the specified rules. GetHashCode(Read...
Finally, don't use the hash code instead of a value returned by a cryptographic hashing function if you need a cryptographically strong hash. For cryptographic hashes, use a class derived from theSystem.Security.Cryptography.HashAlgorithmorSystem.Security.Cryptography.KeyedHashAlgorithmclass. ...