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Vagrant error: NFS is reporting that your exports file is invalid

... Try using the known good versions of VirtualBox and Vagrant noted in Discourse as Your First Rails App: Vagrant 1.1.2 VirtualBox 4.2.10 I was having the same issue on Mac (OS X 10.9 (Mavericks)), but rolling back to these versions seemed to fix it for me. ...
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Sort a Map by values

I am relatively new to Java, and often find that I need to sort a Map<Key, Value> on the values. 58 Answers ...
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Eclipse - debugger doesn't stop at breakpoint

...t's no guarantee though, since fixes have been released against 6u16, 6u18 and 7b1). The best bet is to use -XX:+UseParallelGC flag. Increasing the size of the minimum and maximum heap size, to delay the first GC, bring temporary relief. By the way, use this bug report in Eclipse to track how other...
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Reset select2 value and show placeholder

...t by select2. In my example If locations or grade select boxes are clicked and my select2 has a value than the value of select2 should reset and show the default placeholder. This script is resetting the value but won't show the placeholder ...
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Emacs - Multiple columns one buffer

.... I'd like to be able to use some of the acres of horizontal space I have and see more code on-screen at one time. Is there a method for getting Emacs (or indeed another editor) to show me multiple columns all pointing to the same buffer? ...
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How to implement the activity stream in a social network

I'm developing my own social network, and I haven't found on the web examples of implementation the stream of users' actions... For example, how to filter actions for each users? How to store the action events? Which data model and object model can I use for the actions stream and for the actions it...
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What is the purpose of XORing a register with itself? [duplicate]

...t is more efficient. The opcode is shorter than mov eax, 0, only 2 bytes, and the processor recognizes the special case and treats it as a mov eax, 0 without a false read dependency on eax, so the execution time is the same. ...
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Jar Mismatch Found 2 versions of android-support-v4.jar in the dependency list

I am trying to create 2 versions of an Android app (free/paid). I have an Android Library that contains files common to both. I created a new Android project and am trying to use the Library but get the error below: ...
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Having a private branch of a public repo on GitHub?

...ode) You can bring in changes to your public repo using 'git fetch public' and then merge them locally and push to your private repo (origin remote). share | improve this answer | ...
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Git stash pop- needs merge, unable to refresh index

...y stash because I merged a branch which apparently conflicts with my stash and now my stash is seemingly unable to be popped. ...