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

How to write Vue next response? Detailed explanation of this article

preface 1. This paper will write a response principle in Vue next from scratch. Due to the difficulty of space and understanding, we will only implement the core api and ignore some boundary function points The APIs to be implemented in this article include track trigger effect reactive watch computed2. Recently, many people asked me about th ...

Posted by sorenchr on Thu, 18 Jun 2020 06:06:20 +0200

vue is absolutely dry. You can leave work early for an appointment

1. Dynamic components Two days ago, the product manager came to me with new requirements. He told me that different content should be displayed on the page according to the different permissions of users. Then I wrote out the components corresponding to different permissions, and then I used v-if to det ...

Posted by e4c5 on Thu, 18 Jun 2020 04:25:44 +0200

[Kaggle Learning Notes]| Intermediate Machine Learning

On the basis of the Intro to Machine Learning course, it explains how to deal with missing values, non-numeric data, and data leaks. Lost value handling Discard columns containing missing values directly Replace the missing value with the average value (sklearn.impute SimpleInpuer function in) Record ...

Posted by landavia on Wed, 17 Jun 2020 05:04:27 +0200

Java business verification tool implementation

1, Background In our daily interface development process, we may have to face some slightly more complex business logic code writing. Before executing the real business logic, we often need to carry out a series of pre verification work, which can be divided into parameter validity verification and business data verification. Parameter validity ...

Posted by mahenderp on Wed, 17 Jun 2020 04:34:10 +0200

Common methods of js arrays you don't know

Analysis of Common Methods of js Array Arrays are also object data types and consist of key-value pairs var ary = [12,23,34]; one-dimensional array /* *Structure * 0:12 * 1:23 * 2:34 * length: 3 */ 1. Number as index (attribute name), index increases from 0 2. There is a length property that stores the le ...

Posted by Kurt on Wed, 17 Jun 2020 03:57:25 +0200

Native Js to realize automatic and seamless carousel graph

javascript implementation of automatic seamless rotation chart 1. Implementation principle The principle of the implementation of the rotation chart is to use a large box group container, which contains a small box for moving. The small box contains pictures to be rotated. The pictures are horizonta ...

Posted by chet23 on Tue, 16 Jun 2020 10:21:07 +0200

HTML5. Notes. Cases

HTML 1, html introduction 1. What is HTML? HTML:hyper text Makrup language hypertext markup language is composed of various tags, which are used to make web pages and tell browsers how to display pages 2. Function Make web pages, control the display of web pages and content Insert picture, musi ...

Posted by gruzaw on Tue, 16 Jun 2020 10:07:59 +0200