Java implementation of mimic win10 calculator

Article Directory 1. Experimental purposes: II. EXPERIMENTAL CONTENTS 3. Experimental Principles 4. Operation Source code: Learn together and make progress together ~ 1. Experimental purposes: 1. Master the programming design method of Java GUI; 2. Master the programming method of exception hand ...

Posted on Tue, 11 Feb 2020 19:36:46 -0800 by hedge

[Spring] Spring's first understanding of AOP

What is AOP? AOP is the abbreviation of Aspect Oriented Programming, which means: face-to-face programming. Spring provides rich support for face-to-face programming, which allows cohesive development by separating application business logic and system level services. Why AOP Application objects onl ...

Posted on Tue, 04 Feb 2020 06:39:33 -0800 by tensionx

Day32 -- configure AOP based on XML

I. review We talked about using annotations to configure AOP. Today we talk about using XML to configure AOP The source code of this article has been uploaded to the "resources" of this blog. You can download it for free if you need 2, Knowledge reserve Use XML, so delete some annotations, ...

Posted on Sat, 01 Feb 2020 07:37:35 -0800 by designsubway

Avoid too many if-else new postures: guard sentences, small functions, polymorphism, reflection

Catalog   Preface guard clause Code: Small function LoD Concepts: Code: Map Extract Object Stream polymorphic reflex Preface In our normal development process, due to the time constraints of the project, the code can be used as good as possible, often ignoring the quality of the code.S ...

Posted on Sun, 26 Jan 2020 17:46:46 -0800 by IanM

Basic knowledge of polymorphism

polymorphic Navigation: 1. Basic concept of polymorphism 2. Polymorphic small cases 3. Pure virtual function 4. Virtual structure and pure virtual structure -----------------—The basic concept of polymorphism Polymorphism can be divided into two categories: 1. Static polymorphism: both function overlo ...

Posted on Sun, 19 Jan 2020 00:31:39 -0800 by TimUSA

COMMENTS - describe elements

Definition Definition: Annotation, also known as metadata. A code level description. It is a feature introduced by JDK 1.5 and later. It is at the same level as class, interface and enumeration. It can be declared in front of package, class, field, method, local variable, method parameter, etc. to exp ...

Posted on Tue, 14 Jan 2020 20:27:52 -0800 by ErcFrtz

These 42 Python examples are too distracting~

Say goodbye to boredom and learn a Python example in 60 seconds. In the past 1 month, I've changed the code snippets I usually use into small examples, and I've been liked by all of you after sharing them. 1, Basic operation .     1 chain comparison   i = 3 print(1 < i < 3)  # False print(1 < i <= 3)  # True Without else and ...

Posted on Fri, 03 Jan 2020 05:47:15 -0800 by SureFire

Applet calculator

This calculator supports the calculation after clicking "=" so as to calculate the later operation with high operator such as 2 + 3 * 4.   Interface construction For function buttons, because the styles are relatively uniform, wx:for loops are used for layout, and view control is used for each key.   wxml file ...

Posted on Fri, 13 Dec 2019 13:11:06 -0800 by JackJack

The branch structure of python

Use of if statement In Python, if, elif, and else keywords can be used to construct a branch structure. Keywords are words with special meanings. For example, if and else are keywords specially used to construct branch structures. Obviously, you can't use them as variable names (in fact, they can't be used as other identifiers). He ...

Posted on Sat, 07 Dec 2019 17:44:07 -0800 by cheatboy00

The way of learning of Vue Part 10: the realization of simple calculator

The first nine chapters explain some basic knowledge of vue, that is to say: apply what we have learned. Today we will use the first nine chapters to simulate and realize the simple function of calculator. The value of the project is not high, and it is purely to deepen our grasp of what we have learned. Pre school preparation: You need to mast ...

Posted on Fri, 06 Dec 2019 06:24:23 -0800 by selenin