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Android Studio error "Installed Build Tools revision 31.0.0 is corrupted"

I'm on Android Studio 4.2.2. I created a new project and haven't added anything to the starter code and ... it really shouldn't be this hard. See Question&Answers more detail:os...

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c# - How to check all properties of an object whether null or empty?

I have an object lets call it ObjectA and that object has 10 properties and those are all strings. var myObject ... are empty or null. Thanks See Question&Answers more detail:os...

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Can any one explain me how secondary sorting works in hadoop ? Why must one use GroupingComparator and how does ... do-secondary-sort-on_25.html See Question&Answers more detail:os...

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regex - How do I make case-insensitive queries on Mongodb?

var thename = 'Andrew'; db.collection.find({'name':thename}); How do I query case insensitive? I want to find result even if "andrew"; See Question&Answers more detail:os...

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java - Eclipse autocomplete (content assist) with facelets (jsf) and xhtml

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angular - Hide/show individual items inside ngFor

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python - "NoSuchWindowException: no such window: window was already closed" while switching tabs using Selenium and WebDriver through Python3

I have a form that opens in a new tab when I click on it. When I try to navigate to that new tab, I ... platform=Windows NT 6.1.7601 SP1 x86_64) See Question&Answers more detail:os...

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javax vs java package

What's the rationale behind the javax package? What goes into java and what into javax? I know a lot of ... -310) and other J2SE packages. See Question&Answers more detail:os...

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how can I add the aidl file to Android studio (from the in-app billing example)

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Read CSS property of an element using JavaScript

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jquery - Read :hover pseudo class with javascript

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branching and merging - git cherry-pick not working

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How to get a single result from a SQL query in python?

Is there an elegant way of getting a single result from an SQLite SELECT query when using Python? for example: ... ][0] without any success. See Question&Answers more detail:os...

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testing - What is Object Mocking and when do I need it?

Many people use Mock Objects when they are writing unit tests. What is a Mock Object? Why would I ever need ... I need a Mock Object Framework? See Question&Answers more detail:os...

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c - Why does forking my process cause the file to be read infinitely

I've boiled down my entire program to a short main that replicates the issue, so forgive me for it not making ... lines of words it will not. See Question&Answers more detail:os...

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assembly - x86 XOR opcode differences

looking at http://ref.x86asm.net/coder32.html I found two opcodes that match for the statement xor eax,eax ... the XORing two 32bit registers ? See Question&Answers more detail:os...

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How to execute the dex file in android with command?

Can any body please share the method to execute the dex file in android with command? This is just to understand. See Question&Answers more detail:os...

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javascript - What does "return false;" do?

I wrote a webpage where a user can enter a log entry that is stored on a database and then retrieved and printed on ... }); return false; }); ? See Question&Answers more detail:os...

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How does python find a module file if the import statement only contains the filename?

Everywhere I see Python code importing modules using import sys or import mymodule How does the interpreter find the ... or path is provided? See Question&Answers more detail:os...

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java - Base64 encoder and decoder

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python - is there any build-in function can do skeletonization in openCV?

I found some implementation in C/C++ such as voronoi skeleton. Usually those codes require intensive looping, which ... can be called in python? See Question&Answers more detail:os...

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android - Save data and change orientation

I have two activities and I use android:configChanges="keyboardHidden|orientation|screenSize" @Override public void ... activity orientation? See Question&Answers more detail:os...

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c - Unexpected output when printing directly to text video memory

I am developing a kernel in C and created something to print on screen on video memory. I expected that the first byte ... fr os-image *.bin *.o See Question&Answers more detail:os...

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java - Stax XMLStreamReader check for the next event without moving ahead

I have a large XML file that consists of many events. I would like to unmarshal them. As it's a ... able to provide a complete explanation. See Question&Answers more detail:os...

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How do I "use" a Perl module in a directory not in @INC?

I have a module in the parent directory of my script and I would like to 'use' it. If I do use '../Foo. ... I'm going crazy! What's wrong here? See Question&Answers more detail:os...

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java - When using Mokito, what is the difference between the actual object and the mocked object?

In the program below, I am trying to use mockito with junit in my test case. But I don't see how Mokito ... an object? I appreciate your help! See Question&Answers more detail:os...

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How can I integrate socket.io on Karate

I know that karate has a built-in support for WebSocket, but there is anyway that can use socket.io on ... that the message is as expected. See Question&Answers more detail:os...

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Fast Video Compression on Android

I want to upload video files to server and compress before uploading. I'm using ffmpeg libx264. I have seen ... achieve this? Thanks in advance. See Question&Answers more detail:os...

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