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Undo part of unstaged changes in git
...e diff between your working copy and index to revert. Likewise, git add -p allows you to choose hunks to add to the index, and git reset -p allows you to choose individual hunks from the diff between the index and HEAD to back out of the index.
$ git checkout -p file/to/partially/revert
# or ...
$ ...
Should I commit or rollback a read transaction?
...should close it. Committing releases any locks you may have had, and is equally sensible with ReadUncommitted or Serializable isolation levels. Relying on implicit rollback - while perhaps technically equivalent - is just poor form.
If that hasn't convinced you, just imagine the next guy who insert...
What exactly are “spin-locks”?
...ads on the same core. This has a performance penalty if the wait time is really short, because your thread now has to wait for a preemption to receive CPU time again.
Besides, kernel objects are not available in every state of the kernel, such as in an interrupt handler or when paging is not availab...
What is the different between 'Auto' and '*' when setting width/height for a grid column?
...elements within it require.
The width of * sized columns is calculated by allocating space for the Auto, and fixed width columns, and then dividing up the remaining space. So if there's only one * sized column, it will get all the remaining space, if there were two they would get half each, etc. Yo...
git index.lock File exists when I try to commit, but cannot delete the file
...
I see that sometimes the lock file gets deleted automatically. Any clue why this file need to be deleted manually sometimes ?
– Nrj
Jan 6 '15 at 10:28
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applicationWillEnterForeground vs. applicationDidBecomeActive, applicationWillResignActive vs. appli
...ugh springboard, app switching or URL) applicationWillEnterForeground: is called. It is only executed once when the app becomes ready for use, after being put into the background, while applicationDidBecomeActive: may be called multiple times after launch. This makes applicationWillEnterForeground: ...
How to delete history of last 10 commands in shell?
...tory -d 1006; done; history -d $(history 1 | awk '{print $1}')
Wrap this all up in a function to add to your ~/.bashrc:
histdel(){
for h in $(seq $1 $2); do
history -d $1
done
history -d $(history 1 | awk '{print $1}')
}
Example deleting command 4, 5 and 6 (1049-1051) and hiding the...
Could not load file or assembly … The parameter is incorrect
...s
This list will grow as if you have other versions of the framework installed.
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Is there something like RStudio for Python? [closed]
...
spyder or install python(x,y). it is great.
If you are new to Python, you can install the free Anaconda distribution (http://continuum.io/downloads.html), which will install Spyder for you, as well as Python 2.7 and IPython. Spyder is ve...
Do Swift-based applications work on OS X 10.9/iOS 7 and lower?
...sents the type of the variable and the second occurrence after the = sign calls the constructor (initializes the variable).
– ComFreek
Jun 6 '14 at 8:42
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