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How to change the remote repository for a git submodule?
... does this update the submodule url configuration for the previous commits also? ex if i checkout a older commit, will it point to new submodule urls?
– maxmelbin
Aug 16 '12 at 11:32
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How to sum a variable by group
...e(cbind(x$Frequency, x$Metric2, x$Metric3) ...
(embedding @thelatemail comment), aggregate has a formula interface too
aggregate(Frequency ~ Category, x, sum)
Or if you want to aggregate multiple columns, you could use the . notation (works for one column too)
aggregate(. ~ Category, x, sum)...
Multiline strings in JSON
...at you think your are. Maybe this answer explains it better: stackoverflow.com/a/9295597/359996. Note especially the bit about double escaping.
– user359996
Mar 7 '14 at 17:28
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ERROR 2006 (HY000): MySQL server has gone away
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You should be able to put this on the command line, which will avoid temporarily editing a system file:<code>mysql --max_allowed_packet=1GM</code>
– Jan Steinman
Feb 13 '15 at 7:45
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PHP exec() vs system() vs passthru()
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They have slightly different purposes.
exec() is for calling a system command, and perhaps dealing with the output yourself.
system() is for executing a system command and immediately displaying the output - presumably text.
passthru() is for executing a system command which you wish the ra...
JUnit vs TestNG [closed]
... TestNG groups can be done in JUnit 4.8 with Categories: kentbeck.github.com/junit/doc/ReleaseNotes4.8.html.
– Kaitsu
Feb 1 '10 at 13:16
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How to throw an exception in C?
...on called to do throw needing to throw an exception itself. There may be a compiler/library/target specific way to throw/catch exceptions, though. But throwing a class instance will have it's own problems.
– nategoose
May 23 '10 at 21:20
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Fastest Way of Inserting in Entity Framework
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To your remark in the comments to your question:
"...SavingChanges (for each
record)..."
That's the worst thing you can do! Calling SaveChanges() for each record slows bulk inserts extremely down. I would do a few simple tests which will v...
Cannot push to GitHub - keeps saying need merge
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This can cause the remote repository to lose commits; use it with care.
If you do not wish to merge the remote branch into your local branch (see differences with git diff), and want to do a force push, use the push command with -f
git push -f origin <branch>
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How to check whether dynamically attached event listener exists or not?
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