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Java Equivalent of C# async/await?

I am a normal C# developer but occasionally I develop application in Java. I'm wondering if there is any Java equivalent of C# async/await? In simple words what is the java equivalent of: ...
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Difference between Visibility.Collapsed and Visibility.Hidden

What are differences between Visibility.Collapsed and Visibility.Hidden in WPF? 3 Answers ...
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What are metaclasses in Python?

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Is effective C++ still effective?

From what I saw in this post I decided to start reading the book Effective C++ . 3 Answers ...
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How does “make” app know default target to build if no target is specified?

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In C/C++ what's the simplest way to reverse the order of bits in a byte?

While there are multiple ways to reverse bit order in a byte, I'm curious as to what is the "simplest" for a developer to implement. And by reversing I mean: ...
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onIabPurchaseFinished never called.

I've been trying to set up in-app billing for my first app, and have been using the android.test.purchased sku. The purchase come through, and I manage to get the SKU into my inventory, but, as the title says, onIabPurchaseFinished, is never called. ...
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Can I set variables to undefined or pass undefined as an argument?

I’m a bit confused about JavaScript’s undefined and null values. 10 Answers 10...
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SSH Private Key Permissions using Git GUI or ssh-keygen are too open

Recently I've been unable to clone or push to github, and I'm trying to find the root cause. 25 Answers ...
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What CSS selector can be used to select the first div within another div

I have something like: 4 Answers 4 ...