Programming VIP

List is one of the most used data results in Python. How to operate lists efficiently is the key to improve code efficiency. This paper summarizes some of the most common problems of Python lists, hoping to help you. 1. How to access subscript index ...

Actual Operation of China Telecom's Activation and Replenishment Project Project Background The whole process of data analysis/mining Data cleaning Data analysis model training Project Background The current situation of the problem: improving the low activation rate and first charge rate KPI ...

Catalog 1 Generator (Variation of Function) 2 Derivative Formula 3 Recursion 1 Generator (Variation of Function) Judging whether a function is a generator function: Just see if there is yield inside the function # Generator function (whether yield is included in it) def func(): print('F1') y ...

This chapter is for you to analyze ECS cases, resources come from, you get it by yourselves:https://github.com/Unity-Technologies/EntityComponentSystemSamples ECS Case Analysis 1. ForEach - An Introduction Case of ECS In this case, there are t ...

Internal class Internal classes are classes defined within a class. For other classes in the same package, internal classes can be hidden from them. Internal classes have access to all properties and methods of their external classes and do not ne ...

Little Circle Chapter 3 Exercise Questions 1. Write functions to calculate the sum of the incoming numeric parameters. (dynamic parameter transfer) def sum_count(*args): return sum(args) v = sum_count(1, 2, 3, 4) # Transfer parameters print(v) 2. Write the function, the user passes in the modified file name, and the content to be modi ...

AndroidUtilCodeKTX It has been a month since Ktx was officially open source. So far, 98 star s and 11 fork s have been harvested on Github. During this period, I made a list of Github Trending Kotlin classifications, and also received good comments and suggestions from some developers. After this month's tortoise update, I did some functions I ...

[Wu Enda Machine Learning Assignment 2] - Logical Regression Chapter Python Implementation Recommended running environment: python 3.6 Establish a logistic regression model to predict whether a student will be admitted to a university or not. The a ...

Concurrent Sets 1. Concurrent Problem of Ordinary Sets I learned about List (ArrayList|LinkedList), Set (HashSet|TreeSet), and Map (HashMap|TreeMap) collections, which are only suitable for single-threaded use. If multiple threads operate on ...

1. Functional interface 1.1 Functional Interface Overview [Understanding] concept An interface with and only one abstract method How to detect whether an interface is a functional interface @FunctionalInterface Place it above the interface de ...