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c# - How to edit a WritableBitmap.BackBuffer in non UI thread?

My application runs CPU-heavy algorythms to edit an Image placed at a WPF window. I need the edition to ... any useless buffer copying/cloning? See Question&Answers more detail:os...

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

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c - How to use sscanf correctly and safely

First of all, other questions about usage of sscanf do not answer my question because the common answer is to ... must conform to C99 standard. See Question&Answers more detail:os...

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

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javascript - get all combinations for a string

I'm trying to create a function in JavaScript that given a string will return an array of all possible combinations ... 'lights-out' type game. See Question&Answers more detail:os...

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

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floating point - Python float to ratio

I try get ration of variable and get unexpected result. Can somebody explain this? >>> value = 3.2 >>> ... value.as_integer_ratio() (5, 2) See Question&Answers more detail:os...

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

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.net - Why, In Java arithmetic, overflow or underflow will never throw an Exception?

During Java Arithmetic operation , JVM do not throw Underflow or Overflow Exception. So many time we ... exception during arithmetic operation See Question&Answers more detail:os...

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

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javascript - Using image.complete to find if image is cached on chrome?

I have been trying to find out if an external image is cached on the browser with js, this is the code I ... how to make it work with chrome? See Question&Answers more detail:os...

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

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java - VAADIN cannot find themes when in productionMode

I have custom theme for my VAADIN application in src/main/webapp/VAADIN/themes/mytheme/ with files mytheme.scss and ... you in advance for help. See Question&Answers more detail:os...

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

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mysqli - How to run the bind_param() statement in PHP?

I'm trying to make the following code work but I can't reach the execute() line. $mysqli = $this-> ... t find any syntax error there. See Question&Answers more detail:os...

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

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java - Regular Expression - Capturing all repeating groups

I have strings like below: @property.one@some text [email protected]@another optional text here etc which contains @ ... group while repeating. See Question&Answers more detail:os...

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

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algorithm - Can an array be grouped more efficiently than sorted?

While working on example code for an algorithm question, I came across the situation where I was sorting an input ... space, if there are any. See Question&Answers more detail:os...

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

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javascript - jQuery Datepicker "After Update" Event or equivalent

I am using a standard jQuery Datepicker and I need to modify the text in each TD based on some daily status ... ) is out of the loop. See Question&Answers more detail:os...

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

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Are JavaScript forever-pending promises bad?

Say I have a promise called myProm, and say I have success and error handlers called onSuccess and onError. ... something along those lines). See Question&Answers more detail:os...

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

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mysql - Order within group by?

In my system, I have clients. Clients have programs. I want to display a list of clients, showing their most ... joining the same table twice. See Question&Answers more detail:os...

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

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reactjs - How to debug react native apps in visual studio code?

I am using visual studio code IDE to develop react native app and am not using expo library. Before that I ... using visual studio code IDE? See Question&Answers more detail:os...

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

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c# - IIS 7.5, Web Service and HTTP 405 error

I have a web service which I host on my machine. I use Windows 7 and IIS 7.5. Problem: When the client ... ? Web service is built using WCF. See Question&Answers more detail:os...

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

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PHP - Referer redirect script

Often, when searching for answers, I have found that certain websites will allow you to read the information they ... of setting the referer. See Question&Answers more detail:os...

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

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Can I access to resources from different locale android?

I have two locale in my application. Can I access to resources, for example string array from different locale ... to change it in Settings. See Question&Answers more detail:os...

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

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R: Using a string as an argument to mutate verb in dplyr

I am building a shiny app which needs to allow users to define new variables for plotting. Specifically I want to ... could not figure it out) See Question&Answers more detail:os...

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

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row - how to cumulatively add values in one vector in R

I have a data set that looks like this id name year job job2 1 Jane 1980 Worker 0 1 Jane 1981 Manager 1 1 ... . I'll be very much grateful!! See Question&Answers more detail:os...

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

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javascript - Why is it necessary to use bind when working with ES6 and ReactJS?

Using ES5 development with ReactJS, a component can be stated as the following: var MyComponent = React. ... internal mechanisms of React? See Question&Answers more detail:os...

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

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c# - Model binding with nested child models and PartialViews in ASP.NET MVC

I have the following types and classes: namespace MVC.Models public class Page { public EditableContent Content {get; ... } What am I missing? See Question&Answers more detail:os...

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

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oracle11g - Error while trying to retrieve text for error ORA-01019

I have a question related to oracle. I have a machine which earlier had Oracle client installed on it. I ... know if you need more information See Question&Answers more detail:os...

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

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swift - Why is the shorthand argument name $0 returning a tuple of all parameters?

I was trying to define a variable that can hold a closure and ran into some difficulties using Swift's ... why this would be happening. See Question&Answers more detail:os...

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

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691 views

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c++ - How do you set the cout locale to insert commas as thousands separators?

Given the following code: cout << 1000; I would like the following output: 1,000 This can be done using std::locale, ... '))); cout << 1000; } See Question&Answers more detail:os...

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

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sqlite - Database handling stopped working on Android 2.2.1 (Desire HD 1.72.405.3)

For some reason the database handling solution described in this article doesn't work on the HTC Desire HD after it ... is line 10 at pastebin. See Question&Answers more detail:os...

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

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How to set specific color to JavaFX XYChart.Series?

I am trying to style my JavaFX linechart, but can't find any way to set color to specific series. I know, that ... to set a css class to series? See Question&Answers more detail:os...

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

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Why does the C standard leave use of indeterminate variables undefined?

Where are the garbage value stored, and for what purpose? See Question&Answers more detail:os...

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

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java - How to create a println/print method for a custom class

I'm working in Java on a project that requires me to make a few 'container' classes, if you will. Here is ... to correctly print my Pair class? See Question&Answers more detail:os...

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

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