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javascript - Unexpected token ILLEGAL in webkit

// if the box is outside the window, move it to the end function checkEdge() { var windowsLeftEdge = $('#window' ... at line 22 character 2: Unexpected '?'." Question&Answers:os...

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

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112 views

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c# - Why is the 'this' keyword required to call an extension method from within the extended class

I have created an extension method for an ASP.NET MVC ViewPage, e.g: public static class ViewExtensions { ... s base types without requiring the this keyword? Question&Answers:os...

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

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255 views

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How do you test for NaN in JavaScript?

I have a variable x and I want to test if x is set to NaN. How do I do that? My first instinct is ... is wrong. The right answer has 20% as many upvotes. Question&Answers:os...

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

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306 views

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html - How do I style the HTML5 form validation error messages with CSS?

How do I style the HTML5 form validation error messages with CSS? Question&Answers:os...

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

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293 views

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html - How to stream audio/video files such as MP3, MP4, AVI, etc using a Servlet

I would like to stream my audio/video files to web using servlet. I made an attempt with the following servlet: ... is this caused and how can I solve it? Question&Answers:os...

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

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134 views

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java - Getting the inputstream from a classpath resource (XML file)

In Java web application, Suppose if I want to get the InputStream of an XML file, which is placed in the CLASSPATH ( ... the sources folder), how do I do it? Question&Answers:os...

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

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rust - I implemented a trait for another trait but cannot call methods from both traits

I have a trait called Sleep: pub trait Sleep { fn sleep(&self); } I could provide a different ... themselves use, but that seems hacky and terrible. Question&Answers:os...

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

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297 views

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javascript - Highlight text inside of a textarea

Is it possible to highlight text inside of a textarea using javascript? Either changing the background of just a ... or making a portion of the text selected? Question&Answers:os...

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

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java: "final" System.out, System.in and System.err?

System.out is declared as public static final PrintStream out. But you can call System.setOut() to reassign it ... System.in/out/err behaved as final variables) Question&Answers:os...

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

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196 views

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windows - Python method for reading keypress?

I'm new to Python, and I just made a game and a menu in Python. Question is, that using (raw_)input() requires me to press ... = 'a': ... And so on... Any help? Question&Answers:os...

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

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386 views

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r - embed iframe inside shiny app

this is my UI. R shinyUI(fluidPage(titlePanel("Getting Iframe"), sidebarLayout( sidebarPanel( fluidRow( column(6, ... any help on this would be appreciated ? Question&Answers:os...

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

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installation - [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

I am trying to open a program for the first time on Windows XP Pro that uses PostgreSQL 9. I'm ... no avail. Any suggestions would be greatly appreciated. Question&Answers:os...

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

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62 views

1 answer

c# - Simple post to Web Api

I'm trying to get a post request to work with the web api. Following is my api controller. public class ... bind a complex type but not a simple type. Question&Answers:os...

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

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c++ - How do I avoid implicit conversions on non-constructing functions?

How do I avoid implicit casting on non-constructing functions? I have a function that takes an integer ... point out any misuse of terminology and assumptions Question&Answers:os...

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

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93 views

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c++ - Why can't we pass arrays to function by value?

Apparently, we can pass complex class instances to functions, but why can't we pass arrays to functions? Question&Answers:os...

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

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300 views

1 answer

Export data from R to Excel

I am writing codes to export database from R into Excel, I have been trying others codes including: write. ... . Has someone experienced this kind of problems? Question&Answers:os...

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

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579 views

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java - Spring Boot REST API - request timeout?

I have a Spring Boot REST service that sometimes call third party services as a part of a request. I ... holistic solution that covers all my request endpoints? Question&Answers:os...

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

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235 views

1 answer

How to display raw html code in PRE or something like it but without escaping it

I'd like to display raw HTML. We all know one has to escape each "<" and ">" like this <PRE> this ... still does not work on firefox, here is screen shot Question&Answers:os...

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

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185 views

1 answer

java - How to convert String to Date without knowing the format?

I have a problem. I am trying to convert some strings to date, and I don't know the format the date is ... Any ideas how I can correctly format strings to date? Question&Answers:os...

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

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341 views

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In JavaScript how do I/should I use async/await with XMLHttpRequest?

Full disclosure: I'd qualify myself as having intermediate JavaScript knowledge. So this is slightly above my experience ... the above line to // be complete. Question&Answers:os...

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

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167 views

1 answer

c++ - Scope vs. Lifetime of Variable

What is the relation between the scope and the lifetime of a variable? If a variable is out of scope, is the memory of it allowed ... 5; p = &x; } int y = *p; } Question&Answers:os...

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

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387 views

1 answer

javascript - Search recursively for value in object by property name

I'm building an utility function that should search for a property name and return its value once it is found. ... return util.findVal(item, this.propName) } } Question&Answers:os...

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

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98 views

1 answer

java - Using a byte array as Map key

Do you see any problem with using a byte array as Map key? I could also do new String(byte[]) and hash by String but it is more straightforward to use byte[]. Question&Answers:os...

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

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372 views

1 answer

javascript - Get caret position in HTML input?

How do I get the index of the text caret in an input? Question&Answers:os...

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

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6.3k views

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jsp - How do you store Java objects in HttpSession?

So I am trying to get a servlet to add a Java object to the session of the user, when this servlet is ... .getAttribute("object"); Both ways still return null. Question&Answers:os...

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

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271 views

1 answer

php - How can I generate a screenshot of a webpage using a server-side script?

I need a server-side script (PHP, Python) to capture a webpage to a PNG, JPG, Tiff, GIF image and resize ... a Snapshot or Thumbnail of a web page using PHP? Question&Answers:os...

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

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410 views

1 answer

c# - Custom validation attribute that compares the value of my property with another property's value in my model class

I want to create a custom validation attribute, in which I want to compare the value of my property ... SourceCity with DestinationCity How can I get there? Question&Answers:os...

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

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278 views

1 answer

multithreading - How do I get a thread safe print in Python 2.6?

print in Python is not thread safe according to these articles. A Python 3 work-around is offered in the latter ... get a thread safe print in Python 2.6? Question&Answers:os...

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

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