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What is a deadlock?
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X starts to use A.
X and Y try to start using B
Y 'wins' and gets B first
now Y needs to use A
A is locked by X, which is waiting for Y
The best way to avoid deadlocks is to avoid having processes cross over in this way. Reduce the need to lock anything as much as you can.
In databases avoid mak...
How to conclude your merge of a file?
...as Marius, had done a merge, resolved the conflicts, but nothing to commit now (somehow). Had to manually delete the MERGE* files as suggested.
– Simon East
Apr 30 '12 at 2:03
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How to join (merge) data frames (inner, outer, left, right)
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This works in data.table now, same function just faster.
– marbel
Dec 2 '16 at 19:44
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Linux/Unix command to determine if process is running?
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You SHOULD know the PID !
Finding a process by trying to do some kind of pattern recognition on the process arguments (like pgrep "mysqld") is a strategy that is doomed to fail sooner or later. What if you have two mysqld running? Forg...
PowerShell says “execution of scripts is disabled on this system.”
... Get-ExecutionPolicy does not show all the scopes. Import-Module SQLPS is now working with policies changed as follows: {Undefined- Process,MachinePolicy,UserPolicy,}; {RemoteSigned- CurrentUser, LocalMachine}.
– SherlockSpreadsheets
Feb 1 '19 at 17:45
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Do using statements and await keywords play nicely in c#
...nam: No, using and await serve entirely different purposes. Note that C# 8 now has asynchronous disposal as well. While it's worth being aware of the threading issue my answer highlights, that definitely doesn't mean it's wrong to mix using and await.
– Jon Skeet
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MySQL connection not working: 2002 No such file or directory
...thing wrong in my hosts setup, but this quick fix get's me going for right now.
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Disable Visual Studio devenv solution save dialog
... A note to those coming from the msdn link in this answer (that now links to this stackoverflow post) - this answer worked for me without having to do any of the registry editing mentioned - just make this one change and it will fix the problem.
– Adam Knights
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Is [CallerMemberName] slow compared to alternatives when implementing INotifyPropertyChanged?
...rk Not sure why you didn't edit it directly into the answer, although I've now done so.
– Ian Kemp
Jan 20 '17 at 7:55
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Replace transparency in PNG images with white background
... This is the only solution of the above that worked for me. Now the iTunes store is happy with my image.
– Bill Cheswick
Jan 2 '15 at 3:34
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