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Synchronously waiting for an async operation, and why does Wait() freeze the program here

Preface : I'm looking for an explanation, not just a solution. I already know the solution. 4 Answers ...
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How do I use the new computeIfAbsent function?

I very much want to use Map.computeIfAbsent but it has been too long since lambdas in undergrad. 4 Answers ...
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Why is there no GIL in the Java Virtual Machine? Why does Python need one so bad?

I'm hoping someone can provide some insight as to what's fundamentally different about the Java Virtual Machine that allows it to implement threads nicely without the need for a Global Interpreter Lock (GIL), while Python necessitates such an evil. ...
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Overriding Binding in Guice

I've just started playing with Guice, and a use-case I can think of is that in a test I just want to override a single binding. I think I'd like to use the rest of the production level bindings to ensure everything is setup correctly and to avoid duplication. ...
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MySQL 'create schema' and 'create database' - Is there any difference

Taking a peak into the information_schema database and peaking at the metadata for one of my pet projects, I'm having a hard time understanding what (if any) differences there are between the create schema command and the create database command for MySQL. ...
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Why do we copy then move?

I saw code somewhere in which someone decided to copy an object and subsequently move it to a data member of a class. This left me in confusion in that I thought the whole point of moving was to avoid copying. Here is the example: ...
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Returning from a finally block in Java

I was surprised recently to find that it's possible to have a return statement in a finally block in Java. 6 Answers ...
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What do the crossed style properties in Google Chrome devtools mean?

While inspecting an element using Chrome's devtools, in the elements tab, the right-hand side 'Styles' bar shows the corresponding CSS properties. At times, some of these properties are struck-through. What do these properties mean? ...
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Django connection to PostgreSQL: “Peer authentication failed”

This is the error I am receiving when I try to get to my Django admin site. I had been using MySQL database no problem. I am new to PostgreSQL, but decided to switch because the host I ultimately plan to use for this project does not have MySQL. ...
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Sublime Text 2: Trim trailing white space on demand

I know that Sublime Text 2 can delete the trailing white space on files upon saving. 5 Answers ...