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datetime - How to get week number in Python?

How to find out what week number is current year on June 16th (wk24) with Python? Question&Answers:os...

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android - Implementing SearchView in action bar

I need to create SearchView from my arrayList<String> and show the suggestions in the drop-down list same this ... result in a different Activity but not work. Question&Answers:os...

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How to make a countdown timer in Android?

I have two EditTexts in XML. In one EditText, the user can put a number as minutes and in another EditText, ... until it gets to zero minutes and zero seconds? Question&Answers:os...

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multithreading - Java: How to test methods that call System.exit()?

I've got a few methods that should call System.exit() on certain inputs. Unfortunately, testing these cases ... that integrates well with JUnit and EclEmma). Question&Answers:os...

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javascript - How to copy text to the client's clipboard using jQuery?

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c++ - using extern template (C++11)

Figure 1: function templates TemplHeader.h template<typename T> void f(); TemplCpp.cpp template<typename T> void ... Is this only for classes or functions too? Question&Answers:os...

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Export to CSV using jQuery and HTML

I have a tabular data which I need to export to csv without using any external plugin or API. I used the ... opens in a new window and as below screenshot. Question&Answers:os...

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ruby - How to change default timezone for Active Record in Rails?

In my application.rb I came across the following comment # Set Time.zone default to the specified zone and make ... and i'd like the setting to carry over Question&Answers:os...

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Check overlap of date ranges in MySQL

This table is used to store sessions (events): CREATE TABLE session ( id int(11) NOT NULL AUTO_INCREMENT , ... there a better way to get that? fiddle Question&Answers:os...

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regex - Regular expression for matching HH:MM time format

I want a regexp for matching time in HH:MM format. Here's what I have, and it works: ^[0-2][0-3]:[0-5 ... ? I need this to work in javascript as well as php. Question&Answers:os...

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python - Asterisk in function call

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.net - LINQ to SQL Left Outer Join

Is this query equivalent to a LEFT OUTER join? //assuming that I have a parameter named 'invoiceId' of type int from c ... = invoice == null ? 0 : invoice.Id } Question&Answers:os...

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python - How do I read text from the clipboard?

How do I read text from the (windows) clipboard with python? Question&Answers:os...

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javascript - Why am I seeing an "origin is not allowed by Access-Control-Allow-Origin" error here?

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reactjs - How to use `setState` callback on react hooks

React hooks introduces useState for setting component state. But how can I use hooks to replace the callback like ... which can be used with useState hook. Question&Answers:os...

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html - How to customize <input type="file">?

Is it possible to change the appearance of <input type="file">? Question&Answers:os...

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Switch statement for multiple cases in JavaScript

I need multiple cases in switch statement in JavaScript, Something like: switch (varName) { case "afshin", ... solution that also follows the DRY concept. Question&Answers:os...

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Can't install Ruby under Lion with RVM – GCC issues

Most questions regarding this problem are due to missing Xcode; I have Xcode 4.2 installed. Install ... #define CANONICALIZATION_FOR_MATHN 1 configure: exit 77 Question&Answers:os...

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How do I get list of methods in a Python class?

I want to iterate through the methods in a class, or handle class or instance objects differently based on ... are available from a class instance in python? Question&Answers:os...

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sql - COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better?

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

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javascript - Controlling fps with requestAnimationFrame?

It seems like requestAnimationFrame is the de facto way to animate things now. It worked pretty well for me for ... a counter variable and then draws a circle. Question&Answers:os...

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python - Max retries exceeded with URL in requests

I'm trying to get the content of App Store > Business: import requests from lxml import html page = requests.get(" ... : [Errno -2] Name or service not known) Question&Answers:os...

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iphone - Tab bar controller inside a navigation controller, or sharing a navigation root view

I'm trying to implement a UI structured like in the Tweetie app, which behaves ... tabBarController.navigationController instead of self.navigationController. Question&Answers:os...

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python - why is plotting with Matplotlib so slow?

I'm currently evaluating different python plotting libraries. Right now I'm trying matplotlib and I'm quite disappointed with ... :' , 200/(time.time()-tstart) Question&Answers:os...

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swift3 - How to provide a localized description with an Error type in Swift?

I am defining a custom error type with Swift 3 syntax and I want to provide a user-friendly description of the ... it work without casting to my error type? Question&Answers:os...

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c# - How to convert byte array to string

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python - How do you access the query string in Flask routes?

How do you access query parameters or the query string in Flask routes? It's not obvious from the Flask ... = ??? return render_template("data.html") Question&Answers:os...

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sql - How to get next/previous record in MySQL?

Say I have records with ID 3,4,7,9 I want to be able to go from one to another by navigation via next/ ... result set and manually iterating? I'm using MySQL 5. Question&Answers:os...

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

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