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Is there a way to convert a string from uppercase, or even part uppercase to lowercase? For example, "Kilometers" → "kilometers". Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Using Node.JS, how do I read a JSON file into (server) memory?

Background I am doing some experimentation with Node.js and would like to read a JSON object, either from ... and into server memory using JavaScript/Node? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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212 views

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javascript - How to loop through an array containing objects and access their properties

I want to cycle through the objects contained in an array and change the properties of each one. If I do this: ... I've exhausted this avenue first. Thank you! Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - String, StringBuffer, and StringBuilder

Please tell me a real time situation to compare String, StringBuffer, and StringBuilder? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Local dependency in package.json

I want to do something like this, so npm install also installs the package.json of ../somelocallib or more importantly its ... "*", "../somelocallib": "*" } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Python lambda closure scoping

I am trying to use closures to eliminate a variable from a function signature (the application is to make writing all the functions ... ..: f(1) c 1 c 1 c 1 Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Code within d3.json() callback is not executed

I am trying to load a GeoJSON file and to draw some graphics using it as a basis with D3 v5. The problem ... suspect the issue is with the d3.json call itself. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Python OpenCV streaming from camera - multithreading, timestamps

I ran simple python script on Raspberry Pi 3. This script is responsible to open video device and stream data ( ... on the client side (receiver) it possible? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Shooting a bullet in pygame in the direction of mouse

I just cant figure out why my bullet is not working. I made a bullet class and here it is: class Bullet: ... or the method I have used is completely wrong. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - How to avoid joining all text from Nodes when scraping

When I scrape several related nodes from HTML or XML to extract the text, all the text is joined into one long ... does this happen and how do I avoid it? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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connection - Using R to download zipped data file, extract, and import data

@EZGraphs on Twitter writes: "Lots of online csvs are zipped. Is there a way to download, unzip the archive, and load ... if I'm a long way off. Any thoughts? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How can I create download link in HTML?

I have a basic idea of HTML. I want to create the download link in my sample website, but I don't have idea ... a link to download a file rather than visit it? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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308 views

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Is there a way to define a min and max value for EditText in Android?

I want to define a min and max value for an EditText. For example: if any person tries to enter a month value ... 22 it mustn't accept it while I am entering. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - How to use the "required" attribute with a "radio" input field

I am just wondering how to use the new HTML5 input attribute "required" in the right way on radio buttons. Does ... "color" value="white" required="required" /> Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Call An Asynchronous Javascript Function Synchronously

First, this is a very specific case of doing it the wrong way on-purpose to retrofit an asynchronous call into a very ... UI. If such a thing is possible in JS. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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411 views

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javascript - How to get JS variable to retain value after page refresh?

This question already has answers here: Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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429 views

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python - Splitting a list into N parts of approximately equal length

What is the best way to divide a list into roughly equal parts? For example, if the list has 7 elements and ... ), but that destroys the ordering of the items. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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74 views

1 answer

c# - How to connect to MySQL Database?

New to C# programming, I'd like to be able to access MySQL Databases. I know MySQL connector/NET and ... connector? Is there anything else they would need? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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210 views

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r - Formula with dynamic number of variables

Suppose, there is some data.frame foo_data_frame and one wants to find regression of the target column Y by some others ... R provide smth to write here?) } } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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formatting - How to print a float with 2 decimal places in Java?

Can I do it with System.out.print? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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179 views

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r - How do I save warnings and errors as output from a function?

I'm using lapply to run a complex function on a large number of items, and I'd like to save the output from ... thing in the list? for the most relevant ones. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to copy DLL files into the same folder as the executable using CMake?

We use CMake for generating the Visual Studio files of our sources in our SVN. Now my tool requires some ... /debug folders or will copy them upon compilation? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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106 views

1 answer

javascript - Event detect when css property changed using Jquery

Is there a way to detect if the "display" css property of an element is changed (to whether none or block or inline-block...)? if not, any plugin? Thanks Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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202 views

1 answer

java - Using Graphics2D to overlay text on a BufferedImage and return a BufferedImage

I have checked similarly named questions, but they don't answer this use case. Basically, I was to overlay ... the image appears out the end unchanged. Thanks! Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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169 views

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.net - ControlTemplate for existing controls in WPF

How to get existing control's ControlTemplate in WPF in XAML format (visual tree)? This is to help ... new ControlTemplate with the help of existing template. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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406 views

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shell - Using cURL to upload POST data with files

I would like to use cURL to not only send data parameters in HTTP POST but to also upload files with specific ... How do I adjust my cURL commands accordingly ? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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140 views

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.net - When should I use a struct instead of a class?

MSDN says that you should use structs when you need lightweight objects. Are there any other scenarios when a struct is ... good feel for when to use a struct. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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200 views

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java - When should a class be Comparable and/or Comparator?

I have seen classes which implement both Comparable and Comparator. What does this mean? Why would I use one over the other? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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