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Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference

...nicity. Forewords This topic has been iterated at least a couple of thousands of times, here, in Stack Overflow. Hence, first off I'd like to point out some extremely useful resources: @Felix Kling's answer to "How do I return the response from an asynchronous call?". See his excellent answer ex...
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How does a language expand itself? [closed]

I am learning C++ and I've just started learning about some of Qt 's capabilities to code GUI programs. I asked myself the following question: ...
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How to move Jenkins from one PC to another

...el comfortable with Jenkins as my long term "partner" in the build process and would like to "move" this Jenkins to a dedicated server. ...
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How do I fix PyDev “Undefined variable from import” errors?

I've got a Python project using PyDev in Eclipse, and PyDev keeps generating false errors for my code. I have a module settings that defines a settings object. I import that in module b and assign an attribute with: ...
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DTO and DAO concepts and MVC [closed]

1) Why do we use DTO and DAO , and when should we use them. I am developing a GUI Java software to do with inserting, editing, deleting data. But I am struggling to distinguish between DTO/DAO and Model , View , Controller (MVC) Structure? Are they similar, which is better to use when i...
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How do I stop Skype from using HTTP or HTTPS ports 80 and 443? [closed]

I installed the Apache web server on my Windows 7 machine and I'm unable to start it because Skype.exe is already using HTTP port 80 and HTTPS port 443. ...
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Should flux stores, or actions (or both) touch external services?

Should the stores maintain their own state and have the ability to call network and data storage services in doing so ...in which case the actions are just dumb message passers, ...
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Howto: Clean a mysql InnoDB storage engine?

...eople create multiple ibdata files hoping for better disk-space management and performance, however that belief is mistaken. Can I run OPTIMIZE TABLE ? Unfortunately, running OPTIMIZE TABLE against an InnoDB table stored in the shared table-space file ibdata1 does two things: Makes the table’s...
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Difference between HashSet and HashMap?

... does not allow duplicate values, what is the difference between HashMap and HashSet ? 19 Answers ...
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Difference between single and double quotes in Bash

In Bash, what are the differences between single quotes ( '' ) and double quotes ( "" )? 6 Answers ...