list getrange

The collection operation discovery is getting richer and richer now. Today's Christmas, we take the commonly used list as an example to quietly read some of the collection operations, which is really convenient to use. 1. merge, insert, delete, and

Arraylist class Because the length of an array cannot be known in advance or may beProgramStatic array is not very useful. One solution to this problem is to use an array in the program that can dynamically adjust the size when the default storage

The string command is the most common, simplest command in Redis. 1, set command-set the value of the specified keyThe set command in Redis sets the value of the given key, overwriting the old value if the key already stores another

String TypeSet/get is the most common and simplest operation. Key value pair; [Plain]View plain copy 192.168.159.130:7000> set num 1 OK 192.168.159.130:7000> get num "1" 192.168.159.130:7000&gt ; Get Age (Nil) SETNX differs from set if the key value

A typical problem with array types is fixed capacity. If you don't know beforehand how many objects the array will hold, you risk a space that is too small (overflow) or too large (a waste of space) to declare an array. Your program may allow users

Collections are an important concept in OOP, and the full support for collections in C # is one of the best of the language. Why use a generic collection? There are two main ways to implement a collection before C # 2.0: A. Using ArrayList It is

List Protected List T > Listpager T > (List T > Datasource, Int Currentpageindex, Int Pagesize, String Filterexpression, Ref Int Count){Count = 0 ; If (Datasource = Null | Datasource. Count = 0

basic operation of Redis database base 1, Introduction: The REDIS,K-V database can contain data types that have strings, hashes, lists, collections, and ordered collections. data types support Push/pop,add/remove, intersection, and set, the

Redis data type-five data types: string, list, set, zset, hash1 ). string is the simplest type. A key corresponds to a value. String is binary secure. Redis string can contain any data, such as JPG images or serialized objects (Object serialization

Redis Cache Database ServerRedis is an open source technology and memory can also be persisted in the log-type, Key-value databaseThe Redis storage is divided into memory storage, disk storage, and log files, which are configured with three