Programmer Think

Creating documents in LaTeX LaTex is a great tool for creating documents. It is based on the concept of "what you see is what you get" (what you see is what you get), which means that you only need to focus on the content of the document, and the computer will be responsible for formatting. With LaTex, it's easy to create materials w ...

1 data preprocessing Data preprocessing is roughly divided into three steps: data preparation, data conversion and data output. 1.1 formatted data Scikit learn provides two standard data formatting methods, Fit and Multiple Transform and combined fit and transform. It is recommended to give priority to Fit and Multiple Transform methods. 1. ...

Introduction to JAVA array (I) So far, the basic syntax of java has been basically summarized. The next thing to learn is array. 1. Overview of Array Array is a collection of multiple data of the same type arranged in a certain order, named with a name, and managed uniformly by numbering.Common concepts of arrays: 1. Array name 2. Elements 3 ...

catalogue 1. Common java multi project 1.1 create parent project 1.2 creating subprojects 1.2.1 create subproject children1 1.2.2 create subproject children2 and use subproject children1 1.2.3 create subproject children3 and use subproject children2 1.2.4 adding project files 1.2.5 operation items 2. web multi project 2.1 create paren ...

1, Foreword Cross platform really spent a lot of energy to start from Qt4 7 compatible to Qt6 2 and subsequent versions have lost a lot of hair, and only a few hairs are left. Hey, maybe this is the life of programmers. I have written Qt programs for so many years and prefer to support multiple Qt versions, especially for supporting any Qt ver ...

Python notes character string I String introduction 1. Features A pair of quoted strings name1='Jack' name2="Jerry" Three pairs of quoted string name1='''Jack''' name2="""Jerry""" sen1='''I am Jack, nice to meet you!''' sen2="""I am Jack, nice to meet you too!""" Note: string in three quotation marks supports line feed ...

In this tutorial, we will use React as the front end and Spring Boot as the back end to create a simple "single page application". React is used to build a user interface (UI) at the front end. Spring Boot is very popular in developing RESTful Web services and micro services. As we all know, React is a JavaScript based librar ...

C++ static_cast,dynamic_cast,const_cast and reinterpret_cast (four types of conversion operators) Implicit type conversion is safe and explicit type conversion is risky. The reason why C language adds the syntax of forced type conversion is to emphasize the risk and make programmers aware of what they are doing. However, this way of emphasizi ...

Ruan Yifeng Getting started with ES6 There are some significant differences between ES6 module and CommonJS module mentioned in:The CommonJS module outputs a copy of the value, while the ES6 module outputs a reference to the value.CommonJS module is loaded at run time, and ES6 module is the output interface at compile time.If you read the diffe ...

Note: the content of this study note is from the dark horse k8s video, The video link is as follows: Dark horse k8s video The purpose of recording is to apply relevant knowledge in work and retrieve it quickly Chapter 1 Introduction to Kubernetes 1.1 evolution of deployment mode Physical machine deployment Virtual machine deployment ( ...