Update state in context when starting the application

问题: So basically I already i Have 2 main components, Home And Front(Weather App). I using geolocation and for now when i route from my Home to Front page its take a 2 second to...

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  • 发布于 2020-06-27 20:31
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How do I get the value from this API?

问题: getCoinPrice(coinName: string) { return this._http .get( `https://min-api.cryptocompare.com/data/pricemulti?fsyms=${coinName}&tsyms=EUR` ).pipe(map((result) =...

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  • 发布于 2020-06-27 20:31
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React Native map() and JSX elements in array

问题: Tried using map() to render an array of JSX elements (tableData inside this.state) in React Native but I'm getting an array with undefined elements instead on the console....

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  • 发布于 2020-06-27 20:31
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How to create native events from strings using event constructors? [duplicate]

问题: This question already has answers here: How do I make JavaScript Object using a variable String to d...

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  • 发布于 2020-06-27 20:30
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Convert string to multiple arrays in JavaScript

问题: I have a comma separated string and i want to convert it into multiple arrays. Here is the code i tried but failed to achieve the expected output. const data = "123,456";...

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  • 发布于 2020-06-27 20:30
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keep selected option value when page reload

问题: I want to keep selected option after page refresh. this my code is : window.onload = function() { var selItem = sessionStorage.getItem("SelItem"); jQuery('#me2000 .te...

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Display data in Rich Textarea on (ajax success) in javascript?

问题: Here My Code: <textarea class="textarea" id="about_us" placeholder="Place some text here" style="width: 100%; height: 100%; font-size: 14px; line-height: 18px; bor...

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  • 发布于 2020-06-27 20:30
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Using a column in a CTE that does not exist in another table

问题: I am new to writing recursive queries and I am trying to write my first one. I am trying to determine levels of a corporate hierarchy and have the result table include two...

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  • 发布于 2020-06-27 20:29
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SQL - Converting number to decimals resulting to 0 (avoid automatically rounds)

问题: When executing the below query, I am getting 0.0000010 The data column values have a data type of being numeric values (19,4) select convert (decimal(19,7), partlen*p...

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  • 发布于 2020-06-27 20:28
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Filter out null values in Java 8 stream filter expression so exception is not thrown

问题: I have a Java 8 stream expression that has 3 filters and works fine. I want to guard against null pointer exceptions within the filters for most of the values. This is the...

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  • 发布于 2020-06-27 19:27
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Is there a way to remove some options from Android system settings?

问题: I can't find a way to explain what I need using words, so I'll use images instead. What I want is to have the user open Accessibility settings and enable Window Change De...

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FileNotFound Exception in Java when the file already exists

问题: I am trying to open an Excel file whose complete path is stored in a String filePath. The content of filePath is C:/fullpath/Names.xlsx. I am trying the following code: S...

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  • 发布于 2020-06-27 19:27
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How is a Java program bound to the JDK?

问题: I made a java program that I want to upload on a website. I want it to be available to download for everybody. I read many things about Oracle OpenJDK and OcacleJDK but I d...

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Java Spring Boot - JPA : StackOverflowError with a @ManyToMany relation

问题: I am currently developing an application with the API in JavaSpringBoot and I need to add relationships between users (friends). For this I made a many-to-many relation whi...

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  • 发布于 2020-06-27 19:26
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Refactoring method reduce cognitive complexity for switch case

问题: Hello I am having difficulty to reduce cognitive complexity is there any way to reduce ? any help would be appreciated. Because of Sonarlint I am not able to pass my code...

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  • 发布于 2020-06-27 19:26
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Java Sorting with Lambda Expression

问题: I am new to Java and this might be a dumb question to ask. I was looking at '905. Sort Array By Parity' on Leetcode. One of the solutions is class Solution { public i...

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  • 发布于 2020-06-27 19:26
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Spring MVC deploy war to tomcat 8.5

问题: I deploy my application using spring mvc to tomcat 8.5. When i POST data to save then i receive below error. Whitelabel Error Page This application has no explicit ma...

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  • 发布于 2020-06-27 19:25
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Rotate an item on a background image with transform and js

问题: I have a background image and another image element as needle. So you will see 3 tabs above the snippet page. My goal is to change the position of the needle when you click...

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  • 发布于 2020-06-27 19:24
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How do I structure my project in a Views folder

问题: I want to structure my project in the following way: I want to put all my HTML files in a folder called views. partials hold the files head.html, footer.html and header....

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  • 发布于 2020-06-27 19:24
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How to change css with javascript of multiple images - display: none to display: inline

问题: So I would like the images to appear after I click the button. HTML <button class="knife-button" onclick="bayonetFunction()">Click to see more</button> &lt...

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  • 发布于 2020-06-27 19:24
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