Tag：Raw data
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Time：2021-10-24
The tree structure list has been written before. It is based on Vue explanation, but it seems that it has not solved the pain point. How should the most basic native JS be implemented? This article will introduce the implementation of tree structure list in detail, from data processing into tree structure to dynamic generation […]
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Time：2021-9-6
The example of this blog post comes from the horse JinlongAwk courseas well asAwk exampleIntegration of. Some examples involved in previous awk learning notes will not be repeated here. Processing code comments # cat comment.txt /*AAAA * / # the entire line is full of comments. 1111 222 /*aaaaaaaaa*/ 32323 12341234 12134 / * BBBBBB […]
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Time：2021-8-6
JS JSON parse bigint lost precision 1. Obtain original data2. Replace bigint with string using regular3.JSON.parse() const json = ‘{“smallNumber”: 1, “bigNumber” : 9007199254740999}’; console.log(regexbig(json)); function regexbig(input:string) { // const re1 = input.replace(/:s*([0-9]{15,})s*(,?)/g, ‘: “$1” $2’) // console.log(re1); return JSON.parse(input); }
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Time：2021-7-27
Value type, reference type 1. In go language, value types and reference types have the following characteristics:a、Value type: basic data types, int, float, bool, string, array and structFeatures: variables store values directly, and the memory is usuallyOn stack allocation, the stack will be released after the function is called b、reference type: pointer, slice, map, Chan, […]
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Time：2021-7-9
The encryption algorithm of tea is realized by C + +, and finally compiled into so file, which is provided to the client in JNI mode. The following three problems need to be solved Implementation of tea algorithm, which has open source code can be achieved; Solve the padding problem; The key should be confused […]
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Time：2021-6-30
IO operation is often encountered in our programming. Both languages provide general read method, which allows us to read data from the reader structure. Go //io/io.go type Reader interface { Read(p []byte) (n int, err error) } //bytes/reader.go type Reader struct { s []byte i int64 // current reading index prevRune int // index of […]
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Time：2021-4-27
Author thilakadiboinaCompile FlinSource: analyticsvidhya introduce This paper introduces the use of generative adversarial networks (GAN), which is a technique of oversampling real covid-19 data to predict mortality. This story gives us a better understanding of how data preparation steps, such as dealing with unbalanced data, can improve model performance. The data and core model in […]
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Time：2021-1-22
Description: people who know about crawlers may know that in crawlers, requests are easy to get started, even if there is no basic Xiaobai. After learning for a few days, you can easily request the website, but it is relatively difficult to learn about scratch. This article can list a few simple examples to explain […]
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Time：2020-12-15
Notes before writing: A few days ago, I wore a thin coat for a few days, but I was defeated by the weather in Guangzhou (too hot). So it’s still short sleeve shorts. It’s not cold in Guangzhou. Environmental preparation Tensorflow 2.3.1 was used in this experiment. import numpy as np import matplotlib.pyplot as plt […]
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Time：2020-11-19
Lpad() function: used to complete the left string.For example: lpad (‘original data ‘,’ expected length ‘,’ padding character ‘), lpad (‘123’,’5 ‘,’0′) outputs’ 00123 ‘. The code will fill in the string ‘123’ to 5 bits, and will use ‘0’ to fill in the insufficient digits on the left. When the length of the original […]
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Time：2020-9-20
1338. Halve array size Hi, everyone. I’m a pig. Welcome to the weekly leetcode quiz of the “baby can understand” series. This is question 2 of 174 and 1338 of the list of questions – “halving array size” Title Description Here’s an array of integersarr。 You can select a set of integers and delete each […]
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Time：2020-8-11
brief introduction Compared with layer, marker has a more flexible rendering mode, which is suitable for more complex annotation display on the map. At the same time, marker is rendered by Dom and then superimposed on the map layer, so its performance is inferior to layer. In practical application scenarios, when the map needs to […]
