10 recommended articles about duck typing

In programming, duck typing (English: duck typing) is a style of dynamic typing. In this style, the effective semantics of an object are determined not by inheriting from a specific class or implementing a specific interface, but by the current set of methods and properties. The name of this concept comes from the duck test proposed by James Whitcomb Riley. The "duck test" can be expressed like this: "When you see a bird that walks like a duck, swims like a duck, and quacks like a duck, then this bird It can be called a duck." In duck typing, the focus is not on the type of the object itself, but on how it is used. For example, in a language that doesn't use duck typing, we could write a function that takes an object of type duck and calls its walk and bark methods. In a language that uses duck typing, such a function can accept an object of any type and call its walk and call methods. If the methods that need to be called do not exist, a runtime error will be raised. The fact that any object with the correct walk and call methods can be accepted by a function leads to the above statement, hence the name of this way of determining types. Duck typing is usually

1. Detailed explanation of duck typing in Python

##Introduction: In programming, duck typing (English: duck typing) is a style of dynamic typing. In this style, the effective semantics of an object are determined not by inheriting from a specific class or implementing a specific interface, but by the current set of methods and properties. The name of this concept comes from the duck test proposed by James Whitcomb Riley. The "duck test" can be expressed like this: "When you see a bird that walks like a duck, swims like a duck, and quacks like a duck, then this bird It can be called a duck. "In the duck type, the focus is not on...

##2.

Introduction to PHP Development-Environment Setup Diagram

Introduction: I have been exposed to PHP for almost a year, and I have been learning it intermittently. Recently, the company needs web-related development, but the team currently does not have relevant personnel. I had no choice but to put it on the shelf, and there happened to be an opportunity to further learn PHP. At the same time, I also came up with the idea of ​​writing a PHP tutorial to improve myself and help others. Of course, this is just entry-level, so please ignore it. Let’s get to the point, which is the first step in any development, environment setup. Since we are a beginner, we will use the simplest and foolproof way. 1. Download WampServer. W is Win

##3.

Detailed explanation of duck typing duck typing programming and Python implementation

Introduction: This article mainly introduces the detailed explanation of duck typing duck typing programming and Python implementation examples. Duck typing specifically refers to a programming style in interpreted languages. Friends who need it You can refer to

4.

Detailed introduction to Python’s duck typing

##Introduction: I believe that Python developers are familiar with Python's duck typing. The accurate definition of duck typing in Wikipedia is 'a style of dynamic typing. In this style, the effective semantics of an object are not determined by inheriting from a specific class or implementing a specific interface, but by the "current set of methods and properties". So this article gives you the duck typing of Python.

5. The company wants to use php for some development, start learning php

Introduction: The company wants to use php for some development Some developers started to learn PHP because of business needs, and the company needed to use PHP for development. But I haven't been able to recruit good PHP programmers yet, so I have to hurry up and learn PHP. I can stop it for the time being. If I can, I will learn it in depth. Make a simple note. In order to encourage yourself to learn well. Because I have many years of experience in web development, I have no problem mastering php

in a short time.

6. Where to start with wordpress? Solution ideas

#Introduction: Where to start with wordpress? The PHP page uses the functions provided by WordPress. I am a front-end person and I don’t know anything about it. But now I have to rush to put it on the shelves. I don’t understand. Can you guys give me some advice? Where did wordpress come from? wordpress. . . . ------Solution Idea----------------------WordPress is a blogging platform developed using PHP language. Users can support PHP and MySQL data.

7. Dump data from the MySQL database of the remote Linux service

Introduction: Today I received a new task that needs to be downloaded from the remote server Import data from MySQL database to local. This really feels like rushing the duck to the shelves. Because I have almost never been exposed to mysql before,

8. PHPwind integrates the most native system user synchronous login implementation method

Introduction: I My task is to synchronize PHPWind with the most local login. The leader also knows that my technical ability is limited and I am not very demanding, so I am asked to implement it first and then consider other things. The ducks are put on the shelves and work begins.

9. Should a Pythonic class check parameter validity in __init__?

#Introduction: I know that according to the duck typing principle, parameter types should not be checked. But should parameters be checked for validity in other ways? For example: class Comment(object):... def __init__(self, content, creater, ipaddress):... ... self.content = content... ... self.creater = creater... .. . self.ipaddre

10. Several summary of JSP introductory knowledge_MySQL

Introduction: From September last year , I started to learn JSP. I only had a little awareness of programming before. I fumbled along the way and went through a lot of hardships. Finally one day, I was like a landlubber learning to swim. I was extremely happy. After staying up for a few nights, I finally This pure JSP article publishing program was written. I believe the following little knowledge will be of some help to a novice like me! =

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