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Reset the database (purge all), then seed a database
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As of Rails 5, the rake commandline tool has been aliased as rails so now
rails db:reset instead of rake db:reset
will work just as well
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How do I view an older version of an SVN file?
I have an SVN file which is now missing some logic and so I need to go back about 40 revisions to the time when it had the logic I need. Other than trying to view a diff of the file in the command line ( very hard to read ), is there any way I could get a copy of that file to review so I can study i...
ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired
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from here ORA-00054: resource busy and acquire with NOWAIT specified
You can also look up the sql,username,machine,port information and get to the actual process which holds the connection
SELECT O.OBJECT_NAME, S.SID, S.SERIAL#, P.SPID, S.PROGRAM,S.USERNAME,
S.MACHINE,S.PORT...
Should I choose ActivePerl or Strawberry Perl for Windows? [duplicate]
...l; just click on the ppms and choose install).
But maybe that's solved by now. And maybe one can choose the directory where Strawberry Perl gets installed (I couldn't).
BTW: for compiling your own Inline or XS stuff, just install the MinGW compiler by ppm (I didn't do that, but it looks interestin...
Asynchronous vs synchronous execution, what does it really mean? [closed]
... system simulates this by allocating slices of time to different threads.
Now, if you introduce multiple cores/processors into the mix, then things CAN actually happen at the same time. The operating system can allocate time to one thread on the first processor, then allocate the same block of time...
Generating CSV file for Excel, how to have a newline inside a value
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@Nir: Now let's talk about your real problem. So that means you had a UTF-8 BOM, and opened the file from within Excel and got the Text Import Wizard not recognising that your Value3 newline should be "protected" -- correct? Or pe...
In MVVM should the ViewModel or Model implement INotifyPropertyChanged?
...view-model somehow. Honest question, I'm dealing with this conundrum right now.
– Roger Lipscombe
Jan 18 '10 at 17:15
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What is the difference between ManualResetEvent and AutoResetEvent in .NET?
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Could you up-vote it now ? No one will practically do the second code block here, it's a matter of understanding the difference.
– vezenkov
Oct 13 '15 at 8:06
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gcc makefile error: “No rule to make target …”
...wered Jun 24 '12 at 17:17
Nick KnowlsonNick Knowlson
6,50944 gold badges4141 silver badges6262 bronze badges
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Why cast an unused function parameter value to void?
...For example if you do have the following statement:
ud;
This warning is now suppressed. However now GCC will produce another warning:
unused.c:5:5: warning: statement with no effect [-Wunused-value]
ud;
^~
This warning tells that the statement ud;, while being syntactically valid C, ...