HTML5 Notes + Cases

HTML Notes File extension Word.docx Excel.xlsx PPT.pptx How to open a file extension: [External chain picture transfer failed, source station may have anti-theft chain mechanism, it is recommended to save pictures and upload them directly (img-Vty2rmPe-15928773052) (D:Static Web Page MakingNotesNote ...

Posted by MannyG on Tue, 23 Jun 2020 04:11:34 +0200

Basic process of Python data analysis

Generally speaking, the basic process of data analysis includes the following steps: 1. Ask questions - the metrics we want to know (average consumption, age distribution of customers, turnover trends, etc.) 2. Import Data - Import the original data source into Jupyter Notebook (web crawlers, dat ...

Posted by master123467 on Tue, 23 Jun 2020 03:17:01 +0200

Summary: Classic crash of multithreading in iOS

preface iOS crash is a headache for iOS developers. App crashes, indicating that there is a problem in code writing. It is very important to quickly locate the crash site. It's easier to find the problem in the debugging phase, but it's more troublesome to analyze the crash report of the app that has been launched. This article will summarize a ...

Posted by darksniperx on Mon, 22 Jun 2020 09:02:04 +0200

The second Spring source! XML file parsing process

Spring source code continues to open! Last article In, brother song shared with you the loading method of configuration files in Spring. If you haven't seen it yet, you must have a look at it first, which will help you better understand this article. Portal: The first part of Spring source code is open and complete! How is the configuration fil ...

Posted by MastahUK on Mon, 22 Jun 2020 05:05:50 +0200

Dynamic sql splicing in mybatis

Before moving on to dynamic sql, let's start by saying that a user's id in real development is usually out of order, such as random generation using UUID s. Write one below. public class UUIDGenerate { public static String getIdByUUID(){ return UUID.randomUUID().toString().replaceAll("-" ...

Posted by c-o-d-e on Sat, 20 Jun 2020 18:12:19 +0200

"Office Automation" Land Classification of Territory "Three adjustments", "One key" to Nanjing Classification

Recently, the practical village planning under the system of territorial spatial planning has been expanded in a large area, "three-tone" data is directly facing the problem of converting the current land use. Today, we will talk about the method of "one key" conversion through code. ...

Posted by tpc on Sat, 20 Jun 2020 04:56:20 +0200

Try to implement a simple mvvm with Proxy

A brief overview of Proxy and Reflect Proxy can be understood as setting up a layer of "interception" before the target object, through which the external access to the object must first be intercepted, so it provides a mechanism to filter and rewrite the external access. The original mean ...

Posted by deadparrot on Fri, 19 Jun 2020 12:46:44 +0200

Hash structure of data structure and algorithm (biased to JS)

Data structure (4) Note: This paper is based on the collation of BiliBili Video [JavaScript data structure and algorithm] hash table Its structure is an array. It converts hashcode into an array's subscript through a hash function Features: compared with array, advantages: insert, query and dele ...

Posted by ilikemath2002 on Fri, 19 Jun 2020 06:02:34 +0200

Building neural network

Building neural network The core of all neural networks in Python is the autograd package, which provides the mechanism of automatic derivation for all operations on tensors. It is a framework defined at runtime, which means that the back propagation is determined by how the code runs, and each itera ...

Posted by thepeccavi on Thu, 18 Jun 2020 07:30:39 +0200

hualinux servlet 2.13: ServletRequest interface and its sub interface

catalog 1, Knowledge points 2, Examples 2.1 example 1 obtaining request parameters 2.1.1 code 2.1.2 test results 2.2 example 2 returns the string array corresponding to the request parameter according to the name of the request parameter 2.2.1 in index.jsp Write form 2.2.2 modification Login. ...

Posted by chedong on Thu, 18 Jun 2020 06:37:31 +0200