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How to customize a requirements.txt for multiple environments?

I have two branches, Development and Production. Each has dependencies, some of which are different. Development points to dependencies that are themselves in development. Likewise for Production. I need to deploy to Heroku which expects each branch's dependencies in a single file called 'requiremen...
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Android Studio: how to attach Android SDK sources?

How can I attach Android SDK sources to Android Studio? 16 Answers 16 ...
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What is the Swift equivalent to Objective-C's “@synchronized”?

... from Matt Gallagher about this: cocoawithlove.com/blog/2016/06/02/threads-and-mutexes.html – wuf810 Jul 29 '16 at 11:50 4 ...
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Difference between const & const volatile

...stem, this is typically used to access hardware registers that can be read and are updated by the hardware, but make no sense to write to (or might be an error to write to). An example might be the status register for a serial port. Various bits will indicate if a character is waiting to be read o...
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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?

...ster. If you really care, compile with assembler output for your platform and look to see. It doesn't matter. This never matters. Write your infinite loops however you like. share | improve this a...
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Test if element is present using Selenium WebDriver?

... that is not what I want, because it can be that an element is not present and that is okay, that is not a fail of the test, so an exception can not be the solution. ...
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Rails: Using greater than/less than with a where statement

...th dates here on SO. >= vs > To avoid people having to dig through and follow the comments conversation here are the highlights. The method above only generates a >= query and not a >. There are many ways to handle this alternative. For discrete numbers You can use a number_you_want...
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See my work log in jira

... We are using the Timesheet Reports and Gadgets Add-On for JIRA. It's available on the Atlassian Marketplace under a BSD licence, but it's not free. On our JIRA 5.0.x server, it was accessible from the Projects tab > Summary page > Reports drop-down list...
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What is the >>>= operator in C?

...ague as a puzzle, I cannot figure out how this C program actually compiles and runs. What is this >>>= operator and the strange 1P1 literal? I have tested in Clang and GCC. There are no warnings and the output is "???" ...
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How do I pass an object from one activity to another on Android? [duplicate]

I need to be able to use one object in multiple activities within my app, and it needs to be the same object. What is the best way to do this? ...