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c# - How do I get the color from a hexadecimal color code using .NET?

How can I get a color from a hexadecimal color code (e.g. #FFDFD991)? I am reading a file and am getting ... an inbuilt method in the framework to do this? Question&Answers:os...

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

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python - What is the difference between `sorted(list)` vs `list.sort()`?

list.sort() sorts the list and replaces the original list, whereas sorted(list) returns a sorted copy of the ... state after list.sort() has been performed? Question&Answers:os...

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

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java - HashMap with multiple values under the same key

Is it possible for us to implement a HashMap with one key and two values. Just as HashMap? Please do help me, ... storage of three values with one as the key? Question&Answers:os...

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

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Converting a view to Bitmap without displaying it in Android?

I will try to explain what exactly I need to do. I have 3 separate screens say A,B,C. There is another ... . Please let me know if this is actually possible. Question&Answers:os...

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

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318 views

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c# - How to handle AccessViolationException

I am using a COM object (MODI) from within my .net application. The method I am calling throws a System. ... ); GC.Collect(); GC.WaitForPendingFinalizers(); } Question&Answers:os...

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

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c++ - Using generic std::function objects with member functions in one class

For one class I want to store some function pointers to member functions of the same class in one map storing std:: ... on some weird C++ rules i do not follow Question&Answers:os...

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

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c# - Easiest way to read from and write to files

There are a lot of different ways to read and write files (text files, not binary) in C#. I just need something ... all I need is to read and write strings. Question&Answers:os...

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

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pattern matching - What does `:_*` (colon underscore star) do in Scala?

I have the following piece of code from this question: def addChild(n: Node, newChild: Node) = n match { case Elem( ... Node, and then? What does : _* do? Question&Answers:os...

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

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javascript - Calling a function every 60 seconds

Using setTimeout() it is possible to launch a function at a specified time: setTimeout(function, 60000); But what if ... function (every 60 seconds, let's say). Question&Answers:os...

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

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jquery - Can you autoplay HTML5 videos on the iPad?

The <video> tags autoplay="autoplay" attribute works fine in Safari. When testing on an iPad, the video must be activated ... (I'm running iOS 5+ by the way). Question&Answers:os...

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

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java - How do I use Comparator to define a custom sort order?

I want to develop a sorting demo for car list. I am using data table to display car list. Now actually I want ... am confuse how to implement my custom sort } } Question&Answers:os...

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

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sql - Query to get only numbers from a string

I have data like this: string 1: 003Preliminary Examination Plan string 2: Coordination005 string 3: Balance1000sheet The ... I want to implement it in SQL. Question&Answers:os...

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

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Mongodb $push in nested array

I want add new data my nested array My document is: { "username": "erkin", "email": "[email protected]", "password": " ... ', 'duration' => '3.00' )) ) ); Question&Answers:os...

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

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Android studio adds unwanted permission after running application on real device

After running application on device application required unwanted location permission that is not mention in manifest ... location permission added in my app? Question&Answers:os...

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

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php - "Fatal error: Cannot redeclare <function>"

I have a function(this is exactly how it appears, from the top of my file): <?php //dirname(getcwd()); ... why or how such an error could occur. Any ideas? Question&Answers:os...

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

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Correct javascript inheritance

I've been reading a lot of articles about "inheritance" in javascript. Some of them uses new while ... which I can extend RestModel or LocalStorageModel.) Question&Answers:os...

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

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63 views

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javascript - VueJS: why is "this" undefined?

I'm creating a component with Vue.js. When I reference this in any of the the lifecycle hooks (created, ... Why is this evaluating to undefined in these cases? Question&Answers:os...

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

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sql server - nvarchar concatenation / index / nvarchar(max) inexplicable behavior

I today ran into a really weird problem in SQL Server (both 2008R2 and 2012). I'm trying to build up a string using ... c, @d as d, @e as e, @f as f Question&Answers:os...

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

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python - Why is my pygame application loop not working properly?

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

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337 views

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shell - Redirect stderr and stdout in Bash

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

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213 views

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javascript - Advantages of using prototype, vs defining methods straight in the constructor?

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

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java - How do I use a PriorityQueue?

How do I get a PriorityQueue to sort on what I want it to sort on? Also, is there a difference between the offer and add methods? Question&Answers:os...

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

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343 views

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scala - Task not serializable: java.io.NotSerializableException when calling function outside closure only on classes not objects

Getting strange behavior when calling function outside of a closure: when function is in a object everything is working when ... def someFunc(a:Int) = a+1 } Question&Answers:os...

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

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321 views

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Filter LogCat to get only the messages from My Application in Android?

I observed that when i use Logcat with Eclipse with ADT for Android, I get messages from many other ... show only messages from my own application only. Question&Answers:os...

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

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414 views

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c - How to make child process die after parent exits?

Suppose I have a process which spawns exactly one child process. Now when the parent process exits for ... Kill child process when parent process is killed Question&Answers:os...

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

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216 views

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python - selenium with scrapy for dynamic page

I'm trying to scrape product information from a webpage, using scrapy. My to-be-scraped webpage looks like this ... follows Any idea is appreciated. Thank you! Question&Answers:os...

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

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215 views

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JavaScript ES6 promise for loop

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

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83 views

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javascript - Using jQuery to test if an input has focus

On the front page of a site I am building, several <div>s use the CSS :hover pseudo-class to add a border ... m not sure how to make this happen. Any ideas? Question&Answers:os...

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

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