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ios - How to get RGB values from UIColor?

I'm creating a color object using the following code. curView.backgroundColor = [[UIColor alloc] initWithHue:229 ... the created color object? See Question&Answers more detail:os...

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python - Installing a pip package from within a Jupyter Notebook not working

When I run !pip install geocoder in Jupyter Notebook I get the same output as running pip install geocoder in ... pip where to install geocoder? See Question&Answers more detail:os...

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REST Content-Type: Should it be based on extension or Accept header?

Should the representation(html, xml, json) returned by a RESTful web service be determined by the url or by the Accept HTTP header? See Question&Answers more detail:os...

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

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objective c - Finding the Current Active Window in Mac OS X using Python

Is there a way to find the application name of the current active window at a given time on Mac OS X using Python? See Question&Answers more detail:os...

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

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dart - What is the difference between "show" and "as" in an import statement?

What is the difference between show and as in an import statement? For example, what's the difference between ... are reported as undefined. 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 - Can I use a GitHub project directly in Maven?

I am interested in using a project on GitHub as a dependency in my project. The GitHub project has a pom file. ... is my best course of action? See Question&Answers more detail:os...

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c# - Why is System.Transactions TransactionScope default Isolationlevel Serializable

I am just wondering what a good reason to use Serializable as the default Isolationlevel may be when creating a System. ... ... } Any ideas? See Question&Answers more detail:os...

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Save cURL content result into a string in C++

int main(void) { CURL *curl; CURLcode res; curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, ... examples for C++ thanks! See Question&Answers more detail:os...

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c# - Non client painting on aero glass window

Now Im customizing title bar of my application. My aim is to add one extra button on title bar. Im my ... ] Thank you everybody for answers! See Question&Answers more detail:os...

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force client disconnect from server with socket.io and nodejs

Is there any way to disconnect a client with SocketIO, and literally close the connection? So if someone is connected ... I go about doing that? See Question&Answers more detail:os...

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xcode - Missing symbol names when profiling IPhone application with Instruments

I am compiling an IPhone application via command line (so no XCode options involved) and I am unable to ... help will be greatly appreciated! See Question&Answers more detail:os...

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java - What is the difference between Transaction-scoped Persistence context and Extended Persistence context?

What is the difference between Transaction-scoped Persistence context and Extended Persistence context? See Question&Answers more detail:os...

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unable to call firefox from selenium in python on AWS machine

I am trying to use selenium from python to scrape some dynamics pages with javascript. However, I cannot call ... help me please? Thanks! See Question&Answers more detail:os...

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Django: Display image in admin interface

I've defined a model which contains a link an image. Is there a way to display the image in the model ... display the image together with title? See Question&Answers more detail:os...

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r - How to randomize (or permute) a dataframe rowwise and columnwise?

I have a dataframe (df1) like this. f1 f2 f3 f4 f5 d1 1 0 1 1 1 d2 1 0 0 1 0 d3 0 ... to my previous question on randomizing two columns. See Question&Answers more detail:os...

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

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sql - Sequence vs identity

SQL Server 2012 introduced Sequence as a new feature, same as in Oracle and Postgres. Where sequences are preferred ... do we need sequences? 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 forEach on an array from getElementsByClassName results in “TypeError: undefined is not a function”

In my JSFiddle, I'm simply trying to iterate over an array of elements. The array is non-empty, as the log ... <div class="myClass">Hello</div> See Question&Answers more detail:os...

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How do I remove leading whitespace chars from Ruby HEREDOC?

I'm having a problem with a Ruby heredoc i'm trying to make. It's returning the leading whitespace from each ... what i'm doing wrong here? See Question&Answers more detail:os...

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

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shell - How to check if a process is running inside docker container?

[Updated1] I have a shell which will change TCP kernel parameters in some functions, but now I need to make ... 1:cpuset:/ No /lxc/containerid See Question&Answers more detail:os...

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Should I migrate to ASP.NET MVC?

I just listened to the StackOverflow team's 17th podcast, and they talked so highly of ASP.NET MVC that I ... work? No viewstate? No events? See Question&Answers more detail:os...

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Cast a struct pointer to interface pointer in Golang

I have a function func doStuff(inout *interface{}) { ... } the purpose of this function is to be able to ... to be compatible with *interface{}? See Question&Answers more detail:os...

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

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Access IP Camera in Python OpenCV

How do I access my IP Camera stream? Code for displaying a standard webcam stream is import cv2 import numpy ... .VideoCapture("IP:PORT/video") See Question&Answers more detail:os...

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

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objective c - Dynamic forwarding: suppress Incomplete Implementation warning

I have a class exposing some methods, whose implementation is provided by an inner object. I'm using forward ... warning in XCode exists. See Question&Answers more detail:os...

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c++ - Receiving RTSP stream using FFMPEG library

I have an IPCamera on my LAN streaming video using RTSP. I have been able to capture and display it successfully ... good URL to direct me). See Question&Answers more detail:os...

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ios - Immutable/Mutable Collections in Swift

I was referring to Apple's Swift programming guide for understanding creation of Mutable/ immutable objects(Array, ... forKey:@"Key3"]; See Question&Answers more detail:os...

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

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Does python have a sorted list?

By which I mean a structure with: O(log n) complexity for x.push() operations O(log n) complexity to find an ... insert(...) which is now here. 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 - Bootstrap modal: background jumps to top on toggle

I have a problem, with a modal. I have a button on a page, that toggles the modal. When the modal shows up ... but it has the exact same effect. See Question&Answers more detail:os...

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system.reactive - What are the Hot and Cold observables?

I watched the video and I know the general principles - hot happens even when nobody is subscribed, cold ... tips on hot/cold observables? See Question&Answers more detail:os...

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

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