types of functions in sets

First, overview:sorted-sets and sets types are very similar, both are collections of strings and do not allow duplicate members to appear in a set. The main difference between them is that each member of the sorted-sets has a fraction (score)

Reproduced in: http://www.itxuexiwang.com/a/shujukujishu/redis/2016/0216/133.htmlFirst, overview:Sorted-sets and sets types are very similar, both are collections of strings and do not allow duplicate members to appear in a set. The main difference

First, overview: Sorted-sets and sets types are very similar, both are collections of strings and do not allow duplicate members to appear in a set. The main difference between them is that each member of the sorted-sets has a fraction (score)

in-range lookup for SQL(1) Between.....and usageUsually we look for a record in a fixed area, and can write SQL statements using >=,1 SELECT * from Sales.ordervalues2 where val>=1000 and valQuery Result:The sales.ordervalues here comes from a

Four or five types (ordered and unordered sets): sets (that is, sets) An Introduction: set indicates a set, and add is randomly added ----- unordered set is a set, it is an unordered set of the string type. Set is implemented through hashtable. The

Sets types and operationsSet is a collection, which is an unordered set of the string type. Using hash table, the complexity of adding, deleting, and searching is zero (1 ). For a set, we can achieve the Union of communication and difference sets.

This article mainly discusses the following parts: 1. How to view and query the Oracle character set, 2. Modify character sets and common Oracle utf8 character sets 3. Oracle exp Character Set Problems Body: 1. character set parameters The most

Summary of Basic java data types and summary of Data Types Java data types can be divided into two categories: primitive types and reference types ). The following is the basic Java data type-related knowledge compiled by the java head. If you are

This article mainly introduces reference types such as Object and Function in JavaScript BASICS (3). For more information, see Reading directory Object Type 1. Create a constructor2. Create an object using literal notation Array type Array can also

Introduction to the Delphi Variant type (variant) (Flow vs. Variant types, functions commonly used for variant types)first, the variant types commonly used functions are described:Variant: One can have a variety of data types, you can also tell what