Tag：numerical value
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Native JavaScript development calculator example
The main function of calculator is to carry out digital operation. Developing a web example of calculator function will help to better master the basic digital operation ability of JS. This example analyzes the development steps of a JS calculator in detail. It is best to have some basic JS knowledge when learning this tutorial. […]
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Execution sequence of several timeouts of SAP e-commerce cloud Spartacus SSR optimization engine
SSR optimization engine option Code: const ngExpressEngine = NgExpressEngineDecorator.get(engine, { timeout: 9000, concurrency: 1, forcedSsrTimeout:90000, maxRenderTime:1000, cache: true, cacheSize: 10, renderingStrategyResolver: (req) => RenderingStrategy.DEFAULT}); (1) First, maxrendertimeout timeout arrives: Display log: Then: last: Note that the log here will not be printed on the console: The two timeout values, whose value is large, will be […]
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Data processing cornerstone: Pandas data exploration
Preliminary exploration of pandas data This paper introduces the preliminary exploration of pandas data. After we generate or import data, we can quickly understand and understand the basic information of the data through data exploration, such as the type, index, maximum value and missing value of the fields in the data, which can give us […]
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As far as I know, bytecode instruction set and parsing III (type conversion instruction) of JVM virtual machine
preface This article continues to study the type conversion instructions in the bytecode instruction set to see how the specific instructions operate data type conversion? 1、 Overview of type conversion instructions The type conversion instruction canTwo different numeric types are converted to each other These conversion operations are generally used to implementExplicit type conversion in […]
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Introduction to Python to practice – computer arithmetic
Numerical operation As long as you have read primary school, you must have heard a lot about the concept of numerical operation. In the vernacular, it is “arithmetic“, so computer arithmetic has long been well known. Python arithmetic is also very simple. We can calculate the corresponding result [command line operation] by entering the following […]
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LC 300. Longest increasing subsequence
class Solution { /** Violence law + DP Idea: DP [i] indicates the length of the longest increasing subsequence that must end at the ith position Every time you get to a location, you have to scan back. If the array has been traversed, it exists For an array smaller than the value of the […]
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Method for generating equal length random values
We need to generate a random value of equal length according to the input string. After checking it online, we didn’t find a more direct method. I wrote one myself. For ease of understanding, I added some intermediate process variables. Although the goal can be achieved, I feel a little cumbersome and the execution efficiency […]
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Introduction to redis Chapter 4 – string data types and basic data access operations in redis
Redis is most often used to speed up the access of high heat data of various structural and non structural types. In this article, we will start from the string data type in redis to understand the data access operation of redis. This is the fourth original note in the series. If you haven’t read […]
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High performance computing learning route (for sophomores)
The following is a summary of high-performance computing learning routes and learning materials for sophomores in the team, which can be used as a reference for students with learning needs in this regard. (I will add a learning route of distributed machine learning direction later, which is constantly updated…) basic course (parallel) algorithm design and […]
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Maximum MySQL connections
1、 MySQL maximum connections query 1. View current connections View current connections ./mysqladmin -uroot -p1234.com status Uptime: 1370150 threads: 1 (current connections) questions: 79 slow queries: 0 opens: 33 flush tables: 1 open tables: 26 queries per second AVG: 0.000 ./mysql -uroot -p1234.com -e ‘show status’ | grep -i Threads Delayed_insert_threads 0 Slow_launch_threads 0 Threads_cached […]
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[redis advanced (2)] fuzzy counting of large amount of data
sketch Hyperlog provides an imprecise de duplication counting scheme, which is used to record the count of large amount of data (such as the UV of the website). Although it is imprecise, it is not very imprecise, and the standard error is 0.81%. usage method Hyperlog provides two instructions pfadd and pfcount. According to the […]
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Flink series – real time warehouse data into elasticsearch practice (9)
our real-time stream processing into elasticsearch is still troublesome. Although flick provides relevant sink interfaces, generally speaking, it is just a simple way to insert data. For optimization and login operations using user name and password, whether on the official website or on the Internet, it is written in pieces, which can be spliced […]