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Delete commits from a branch in Git

... IN PROGRESS. It will reset you back to the most recent commit, and erase all the changes in your working tree and index. Lastly, if you need to find a commit that you "deleted", it is typically present in git reflog unless you have garbage collected your repository. ...
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R memory management / cannot allocate vector of size n Mb

... Consider whether you really need all this data explicitly, or can the matrix be sparse? There is good support in R (see Matrix package for e.g.) for sparse matrices. Keep all other processes and objects in R to a minimum when you need to make obj...
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Changing CSS Values with Javascript

...ds like you want to change the global CSS so which will effictively change all elements of a peticular style at once. I've recently learned how to do this myself from a Shawn Olson tutorial. You can directly reference his code here. Here is the summary: You can retrieve the stylesheets via docum...
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the item you requested is not available for purchase

... Make sure to upload the signed APK to developer console. Make sure to install the signed APK on your device not launch the app in the debugger. Make sure to create a test account in your developer console. Setup you testing account Make sure to sign in your device with your test account. In a cas...
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Overriding id on create in ActiveRecord

...why you can't use mass-assignment to set it. However, when setting it manually, it just works: o = SomeObject.new o.id = 8888 o.save! o.reload.id # => 8888 I'm not sure what the original motivation was, but I do this when converting ActiveHash models to ActiveRecord. ActiveHash allows you to...
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Which HTML elements can receive focus?

I'm looking for a definitive list of HTML elements which are allowed to take focus, i.e. which elements will be put into focus when focus() is called on them? ...
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How to filter Android logcat by application? [duplicate]

...ad of logcat then the tags don't need to be the application. You can just call it with pidcat com.your.application You should use your own tag, look at: http://developer.android.com/reference/android/util/Log.html Like. Log.d("AlexeysActivity","what you want to log"); And then when you want ...
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How to force child div to be 100% of parent div's height without specifying parent's height?

... a look at Equal Height Columns with Cross-Browser CSS and No Hacks. Basically, doing this with CSS in a browser compatible way is not trivial (but trivial with tables) so find yourself an appropriate pre-packaged solution. Also, the answer varies on whether you want 100% height or equal height. U...
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std::function vs template

...buggy program to your customer. Moreover, as you correctly pointed out, calls to template functions are resolved statically (i.e. at compile time), so the compiler has all the necessary information to optimize and possibly inline the code (which would not be possible if the call were performed thr...
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How to sort a file, based on its numerical values for a field?

... Thank you all, folks! This is wired, because I looked over its man page back and forth several times and I didnt see that option. Ah, I was at a simplified man page. Damn! – lukmac Jan 31 '11 at 2...