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How to undo 'git reset'?
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Short answer:
git reset 'HEAD@{1}'
Long answer:
Git keeps a log of all ref updates (e.g., checkout, reset, commit, merge). You can view it by typing:
git reflog
Somewhere in this list is the commit that you lost. Let's say you just typed git reset HEAD~ and want to undo it. My reflog look...
Difference between Arrays.asList(array) and new ArrayList(Arrays.asList(array))
... which makes the original array available as a list. Nothing is copied and all, only a single wrapper object is created. Operations on the list wrapper are propagated to the original array. This means that if you shuffle the list wrapper, the original array is shuffled as well, if you overwrite an e...
When is JavaScript synchronous?
... synchronous and when it will be asynchronous? Does jQuery affect this at all?
7 Answers
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Intercept page exit event
...ser might decide to navigate to another website and in doing so could lose all the edits they have not saved.
4 Answers
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Tuples( or arrays ) as Dictionary keys in C#
... answered Jun 5 '09 at 14:06
HallgrimHallgrim
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In what cases do I use malloc and/or new?
I see in C++ there are multiple ways to allocate and free data and I understand that when you call malloc you should call free and when you use the new operator you should pair with delete and it is a mistake to mix the two (e.g. Calling free() on something that was created with the new ...
Is there a version control system for database structure changes?
...keeps track of your current db version.
To migrate up, you run a command called "db:migrate" which looks at your version and applies the needed scripts. You can migrate down in a similar way.
The migration scripts themselves are kept in a version control system -- whenever you change the database ...
Django-DB-Migrations: cannot ALTER TABLE because it has pending trigger events
...son for this maybe because you try to set a column to NOT NULL when it actually already has NULL values.
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Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
...d procedures are always faster. So, since they're always faster, use them ALL THE TIME .
20 Answers
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Delete a single record from Entity Framework?
... @mt_serg, I'm looking 3 steps ahead. when was the last time you really had to remove such a simple record from the DB? usually you are dealing with more complex records that include FK relations. hence my comment.
– baruchl
Sep 30 '14 at 18:46
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