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Name: Far_Rainbow Student No.: 202505000X Major: Software Engineering Grade: 2020 Experiment Name: Experiment 2 merging of non decreasing ordered tables based on sequential tables Experiment content: (1) Experimental purpose Through this experiment, we can deeply understand the logical structure, physical structure and other concepts of the ...

CSS page beautification and layout control concept Cascading Style Sheets cascading style sheets Cascade: multiple styles can act on the same html element and take effect at the same time benefit PowerfulSeparating content presentation from style control Reduce coupling and decouplingMake division of labor and cooperation easierImprove ...

catalogue 1, Common pipeline commands 1.1 sort command 1.2 uniq command 1.3 tr command 1.4cut command 1.5 examples 1.5.1 statistics of current host connection status 1.5.2 count the number of currently connected hosts 2, Regular expression 2.1 definition of regular expression 2.2 common metacharacters (supported tools: find, grep, eg ...

pandas notes 004 4, Basic operations of Index object Index and Index import pandas as pd import numpy as np 1. Index object index 1.1 Series and DataFrame Indexes in Series and DataFrame are Index objects. Series: pd1 = pd.Series(range(5),index = ['A','B','C','D','E']) #Create a Series index from the list and specify the index name ...

Today's topic: Enter two non-zero integers a and B on the keyboard. If both a and B are even, the sum of the two numbers will be output. If both a and B are odd, the difference between the two numbers will be output. If a is odd, B is even, the product of the two numbers will be output. If a is even, B is odd, and the A/B result will be output ...

1, Probability list + sample list         Task description: we often have a probability list and a sample list to represent the probability that each sample is selected, and in the probability list, the sum of the probabilities is 1. For example, [0.7, 0.2, 0.1] and ['iron man', 'Captain America', 'Thor'], the elements in ...

Advantages and disadvantages of heap table and index organization table? Advantages of heap table: there is no back table query in heap table, and its cost is the same no matter which index is used. The disadvantage of heap table: its continuity is not very good. The range query of the primary key is not its strong point. The fill factor is on ...

Working principle and configuration of nginx Module and working principle of nginx Nginx consists of kernel and modules. Among them, the design of the kernel is very small and concise, and the work completed is also very simple. Only by looking up the configuration file, the client request is mapped to a location block (location is an ins ...

Process Overview The basic principle of network communication between client and server is as follows. Message oriented middleware may be added to a more complex architecture. For the server, the communication process is as follows: 1,call socket Function create listener socket 2,call bind Function will socket Bind to a IP And port nu ...

reference type Definition: the data type represented by the actual value reference of the type (similar to the pointer in C). If you assign a reference type to a variable, the variable references (or "points") the original value. Do not create any copies. Reference types include class, interface, delegate, and boxed value types. ...